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53181493297295 = 51117473188337957
BaseRepresentation
bin11000001011110010010000…
…00001000100000010001111
320222022002201201002022121212
430011321020001010002033
523432311144241003140
6305035124000045035
714126143660305566
oct1405711001040217
9228262651068555
1053181493297295
1115a44165589340
125b6ab1a60377b
132389cbb38088c
14d1bdd8776bdd
1562358cc30765
hex305e4804408f

53181493297295 has 64 divisors (see below), whose sum is σ = 75287410661376. Its totient is φ = 35625732372480.

The previous prime is 53181493297277. The next prime is 53181493297307. The reversal of 53181493297295 is 59279239418135.

It is not a de Polignac number, because 53181493297295 - 222 = 53181489102991 is a prime.

It is a super-2 number, since 2×531814932972952 (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1401079457 + ... + 1401117413.

It is an arithmetic number, because the mean of its divisors is an integer number (1176365791584).

Almost surely, 253181493297295 is an apocalyptic number.

53181493297295 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

53181493297295 is a deficient number, since it is larger than the sum of its proper divisors (22105917364081).

53181493297295 is a wasteful number, since it uses less digits than its factorization.

53181493297295 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69920.

The product of its digits is 146966400, while the sum is 68.

The spelling of 53181493297295 in words is "fifty-three trillion, one hundred eighty-one billion, four hundred ninety-three million, two hundred ninety-seven thousand, two hundred ninety-five".

Divisors: 1 5 11 17 47 55 85 187 235 517 799 935 2585 3995 8789 31883 37957 43945 159415 189785 350713 417527 542011 645269 1498501 1753565 1783979 2087635 2710055 3226345 5962121 7097959 7492505 8919895 16483511 19623769 25474517 29810605 30327643 35489795 82417555 98118845 127372585 151638215 280219687 333604073 1210183031 1401098435 1668020365 6050915155 13312013341 20573111527 56878602457 66560066705 102865557635 226304226797 284393012285 625664627027 966936241769 1131521133985 3128323135135 4834681208845 10636298659459 53181493297295