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57256357701081 = 3711247863020351
BaseRepresentation
bin11010000010011000010001…
…10111001010010111011001
321111201122200000100202221210
431001030020313022113121
530001042010032413311
6321435112502053333
715026430630246630
oct1501141067122731
9244648600322853
1057256357701081
11172753152855a0
1265087ba41a249
1325c4336327796
14101d318774517
156945813bb3a6
hex341308dca5d9

57256357701081 has 16 divisors (see below), whose sum is σ = 95179399815168. Its totient is φ = 29743562442000.

The previous prime is 57256357701071. The next prime is 57256357701089. The reversal of 57256357701081 is 18010775365275.

It is not a de Polignac number, because 57256357701081 - 26 = 57256357701017 is a prime.

It is a super-2 number, since 2×572563577010812 (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (57256357701089) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 123931509945 + ... + 123931510406.

It is an arithmetic number, because the mean of its divisors is an integer number (5948712488448).

Almost surely, 257256357701081 is an apocalyptic number.

It is an amenable number.

57256357701081 is a deficient number, since it is larger than the sum of its proper divisors (37923042114087).

57256357701081 is a wasteful number, since it uses less digits than its factorization.

57256357701081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247863020372.

The product of its (nonzero) digits is 12348000, while the sum is 57.

The spelling of 57256357701081 in words is "fifty-seven trillion, two hundred fifty-six billion, three hundred fifty-seven million, seven hundred one thousand, eighty-one".

Divisors: 1 3 7 11 21 33 77 231 247863020351 743589061053 1735041142457 2726493223861 5205123427371 8179479671583 19085452567027 57256357701081