57511617461 has 32 divisors (see below), whose sum is σ = 61983532800. Its totient is φ = 53239380480.

The previous prime is 57511617431. The next prime is 57511617479. The reversal of 57511617461 is 16471611575.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57511617461 is a prime.

It is a super-2 number, since 2×57511617461² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57511617431) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28343795 + ... + 28345823.

It is an arithmetic number, because the mean of its divisors is an integer number (1936985400).

Almost surely, 2^57511617461 is an apocalyptic number.

It is an amenable number.

57511617461 is a deficient number, since it is larger than the sum of its proper divisors (4471915339).

57511617461 is a wasteful number, since it uses less digits than its factorization.

57511617461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2429.

The product of its digits is 176400, while the sum is 44.

The spelling of 57511617461 in words is "fifty-seven billion, five hundred eleven million, six hundred seventeen thousand, four hundred sixty-one".