86591252457 has 6 divisors (see below), whose sum is σ = 125076253562. Its totient is φ = 57727501632.

The previous prime is 86591252401. The next prime is 86591252459. The reversal of 86591252457 is 75425219568.

86591252457 is a `hidden beast` number, since 8 + 6 + 59 + 12 + 524 + 57 = 666.

It can be written as a sum of positive squares in only one way, i.e., 75609050841 + 10982201616 = 274971^2 + 104796^2 .

It is not a de Polignac number, because 86591252457 - 2⁶ = 86591252393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86591252459) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4810625128 + ... + 4810625145.

Almost surely, 2^86591252457 is an apocalyptic number.

It is an amenable number.

86591252457 is a deficient number, since it is larger than the sum of its proper divisors (38485001105).

86591252457 is a wasteful number, since it uses less digits than its factorization.

86591252457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9621250279 (or 9621250276 counting only the distinct ones).

The product of its digits is 6048000, while the sum is 54.

The spelling of 86591252457 in words is "eighty-six billion, five hundred ninety-one million, two hundred fifty-two thousand, four hundred fifty-seven".