57172741972155 has 24 divisors (see below), whose sum is σ = 104315178336720. Its totient is φ = 28887280153920.

The previous prime is 57172741972147. The next prime is 57172741972217. The reversal of 57172741972155 is 55127914727175.

It is a happy number.

57172741972155 is a `hidden beast` number, since 5 + 71 + 72 + 7 + 419 + 72 + 15 + 5 = 666.

It is not a de Polignac number, because 57172741972155 - 2³ = 57172741972147 is a prime.

It is a super-2 number, since 2×57172741972155² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 57172741972092 and 57172741972101.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33434351176 + ... + 33434352885.

It is an arithmetic number, because the mean of its divisors is an integer number (4346465764030).

Almost surely, 2^{57172741972155} is an apocalyptic number.

57172741972155 is a deficient number, since it is larger than the sum of its proper divisors (47142436364565).

57172741972155 is a wasteful number, since it uses less digits than its factorization.

57172741972155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66868704091 (or 66868704088 counting only the distinct ones).

The product of its digits is 43218000, while the sum is 63.

The spelling of 57172741972155 in words is "fifty-seven trillion, one hundred seventy-two billion, seven hundred forty-one million, nine hundred seventy-two thousand, one hundred fifty-five".