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51103005313052 = 22711716007389027
BaseRepresentation
bin10111001111010010110000…
…11110101000100000011100
320200221101210022020202100102
423213221120132220200130
523144232423330004202
6300404221353120232
713523033053040240
oct1347513036504034
9220841708222312
1051103005313052
1115312732279280
1258941310b9078
132268cba022ba4
14c89581c9c420
155d948e3a3d02
hex2e7a587a881c

51103005313052 has 96 divisors (see below), whose sum is σ = 113086966358016. Its totient is φ = 19626517310400.

The previous prime is 51103005313027. The next prime is 51103005313103. The reversal of 51103005313052 is 25031350030115.

It is a happy number.

It is a super-2 number, since 2×511030053130522 (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 131166563 + ... + 131555589.

It is an arithmetic number, because the mean of its divisors is an integer number (1177989232896).

Almost surely, 251103005313052 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51103005313052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56543483179008).

51103005313052 is an abundant number, since it is smaller than the sum of its proper divisors (61983961044964).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51103005313052 is a wasteful number, since it uses less digits than its factorization.

51103005313052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395127 (or 395125 counting only the distinct ones).

The product of its (nonzero) digits is 6750, while the sum is 29.

Adding to 51103005313052 its reverse (25031350030115), we get a palindrome (76134355343167).

The spelling of 51103005313052 in words is "fifty-one trillion, one hundred three billion, five million, three hundred thirteen thousand, fifty-two".

Divisors: 1 2 4 7 11 14 22 28 44 71 77 142 154 284 308 497 781 994 1562 1988 3124 5467 6007 10934 12014 21868 24028 42049 66077 84098 132154 168196 264308 389027 426497 462539 778054 852994 925078 1556108 1705988 1850156 2723189 2985479 4279297 4691467 5446378 5970958 8558594 9382934 10892756 11941916 17117188 18765868 27620917 29955079 32840269 55241834 59910158 65680538 110483668 119820316 131361076 193346419 303830087 386692838 607660174 773385676 1215320348 2126810609 2336885189 4253621218 4673770378 8507242436 9347540756 16358196323 25705737079 32716392646 51411474158 65432785292 102822948316 165918848419 179940159553 331837696838 359880319106 663675393676 719760638212 1161431938933 1825107332609 2322863877866 3650214665218 4645727755732 7300429330436 12775751328263 25551502656526 51103005313052