57081418551 has 72 divisors (see below), whose sum is σ = 91675824240. Its totient is φ = 35482447872.

The previous prime is 57081418547. The next prime is 57081418567. The reversal of 57081418551 is 15581418075.

57081418551 is a `hidden beast` number, since 5 + 7 + 0 + 81 + 4 + 18 + 551 = 666.

57081418551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 57081418551 - 2² = 57081418547 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 57081418497 and 57081418506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57081418451) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 7651015 + ... + 7658471.

Almost surely, 2^57081418551 is an apocalyptic number.

57081418551 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

57081418551 is a deficient number, since it is larger than the sum of its proper divisors (34594405689).

57081418551 is a wasteful number, since it uses less digits than its factorization.

57081418551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7615 (or 7586 counting only the distinct ones).

The product of its (nonzero) digits is 224000, while the sum is 45.

The spelling of 57081418551 in words is "fifty-seven billion, eighty-one million, four hundred eighteen thousand, five hundred fifty-one".