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57164802885 = 3254130983633
BaseRepresentation
bin110101001111010010…
…011010101101000101
312110112220122212110200
4311033102122231011
51414033142143020
642132224041113
74062411543621
oct651722325505
9173486585420
1057164802885
112227504a553
12b0b4463199
135510258568
142aa410a181
1517488b4590
hexd4f49ab45

57164802885 has 24 divisors (see below), whose sum is σ = 101502384984. Its totient is φ = 29744286720.

The previous prime is 57164802883. The next prime is 57164802907. The reversal of 57164802885 is 58820846175.

57164802885 is a `hidden beast` number, since 57 + 16 + 480 + 28 + 85 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 216707841 + 56948095044 = 14721^2 + 238638^2 .

It is not a de Polignac number, because 57164802885 - 21 = 57164802883 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57164802883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15489972 + ... + 15493661.

It is an arithmetic number, because the mean of its divisors is an integer number (4229266041).

Almost surely, 257164802885 is an apocalyptic number.

It is an amenable number.

57164802885 is a deficient number, since it is larger than the sum of its proper divisors (44337582099).

57164802885 is a wasteful number, since it uses less digits than its factorization.

57164802885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30983685 (or 30983682 counting only the distinct ones).

The product of its (nonzero) digits is 4300800, while the sum is 54.

The spelling of 57164802885 in words is "fifty-seven billion, one hundred sixty-four million, eight hundred two thousand, eight hundred eighty-five".

Divisors: 1 3 5 9 15 41 45 123 205 369 615 1845 30983633 92950899 154918165 278852697 464754495 1270328953 1394263485 3810986859 6351644765 11432960577 19054934295 57164802885