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51050160642 = 231317322911923
BaseRepresentation
bin101111100010110100…
…111010001000000010
311212202202212212012110
4233202310322020002
51314022320120032
635241354040150
73455033130405
oct574264721002
9155682785173
1051050160642
111a717537308
129a88719056
134a774c0460
142683db7d3c
1514dbb837cc
hexbe2d3a202

51050160642 has 64 divisors (see below), whose sum is σ = 116467908480. Its totient is φ = 14777938944.

The previous prime is 51050160641. The next prime is 51050160647. The reversal of 51050160642 is 24606105015.

It is a super-2 number, since 2×510501606422 (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51050160641) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4275693 + ... + 4287615.

It is an arithmetic number, because the mean of its divisors is an integer number (1819811070).

Almost surely, 251050160642 is an apocalyptic number.

51050160642 is an abundant number, since it is smaller than the sum of its proper divisors (65417747838).

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

51050160642 is a wasteful number, since it uses less digits than its factorization.

51050160642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15187.

The product of its (nonzero) digits is 7200, while the sum is 30.

Adding to 51050160642 its reverse (24606105015), we get a palindrome (75656265657).

The spelling of 51050160642 in words is "fifty-one billion, fifty million, one hundred sixty thousand, six hundred forty-two".

Divisors: 1 2 3 6 13 17 26 34 39 51 78 102 221 442 663 1326 3229 6458 9687 11923 19374 23846 35769 41977 54893 71538 83954 109786 125931 154999 164679 202691 251862 309998 329358 405382 464997 608073 713609 929994 1216146 1427218 2140827 2634983 4281654 5269966 7904949 15809898 38499367 76998734 115498101 230996202 500491771 654489239 1000983542 1308978478 1501475313 1963467717 3002950626 3926935434 8508360107 17016720214 25525080321 51050160642