57856136121 has 24 divisors (see below), whose sum is σ = 95520993984. Its totient is φ = 33056339040.

The previous prime is 57856136119. The next prime is 57856136179. The reversal of 57856136121 is 12163165875.

57856136121 is a `hidden beast` number, since 5 + 7 + 8 + 5 + 613 + 6 + 1 + 21 = 666.

It is not a de Polignac number, because 57856136121 - 2¹ = 57856136119 is a prime.

It is a super-3 number, since 3×57856136121³ (a number of 33 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (57856136021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 463186 + ... + 574676.

It is an arithmetic number, because the mean of its divisors is an integer number (3980041416).

Almost surely, 2^57856136121 is an apocalyptic number.

It is an amenable number.

57856136121 is a deficient number, since it is larger than the sum of its proper divisors (37664857863).

57856136121 is a wasteful number, since it uses less digits than its factorization.

57856136121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119741 (or 119738 counting only the distinct ones).

The product of its digits is 302400, while the sum is 45.

The spelling of 57856136121 in words is "fifty-seven billion, eight hundred fifty-six million, one hundred thirty-six thousand, one hundred twenty-one".