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57143110869 = 32131925705403
BaseRepresentation
bin110101001101111111…
…101010110011010101
312110111101211210121200
4311031333222303111
51414012114021434
642130131103113
74062026266605
oct651577526325
9173441753550
1057143110869
1122263883a69
12b0a9141a99
135508901c50
142aa12a0c05
151746a2c199
hexd4dfeacd5

57143110869 has 24 divisors (see below), whose sum is σ = 93567670560. Its totient is φ = 33314200992.

The previous prime is 57143110861. The next prime is 57143110897. The reversal of 57143110869 is 96801134175.

57143110869 is a `hidden beast` number, since 57 + 1 + 431 + 108 + 69 = 666.

It is not a de Polignac number, because 57143110869 - 23 = 57143110861 is a prime.

It is a super-2 number, since 2×571431108692 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57143110861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12850479 + ... + 12854924.

It is an arithmetic number, because the mean of its divisors is an integer number (3898652940).

Almost surely, 257143110869 is an apocalyptic number.

It is an amenable number.

57143110869 is a deficient number, since it is larger than the sum of its proper divisors (36424559691).

57143110869 is a wasteful number, since it uses less digits than its factorization.

57143110869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25705441 (or 25705438 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 45.

The spelling of 57143110869 in words is "fifty-seven billion, one hundred forty-three million, one hundred ten thousand, eight hundred sixty-nine".

Divisors: 1 3 9 13 19 39 57 117 171 247 741 2223 25705403 77116209 231348627 334170239 488402657 1002510717 1465207971 3007532151 4395623913 6349234541 19047703623 57143110869