86524012521 has 12 divisors (see below), whose sum is σ = 125405682948. Its totient is φ = 57485804064.

The previous prime is 86524012511. The next prime is 86524012607. The reversal of 86524012521 is 12521042568.

86524012521 is a `hidden beast` number, since 8 + 6 + 524 + 0 + 125 + 2 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 61684676496 + 24839336025 = 248364^2 + 157605^2 .

It is not a de Polignac number, because 86524012521 - 2⁵ = 86524012489 is a prime.

It is a super-3 number, since 3×86524012521³ (a number of 34 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (86524012511) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16403130 + ... + 16408403.

It is an arithmetic number, because the mean of its divisors is an integer number (10450473579).

Almost surely, 2^86524012521 is an apocalyptic number.

It is an amenable number.

86524012521 is a deficient number, since it is larger than the sum of its proper divisors (38881670427).

86524012521 is a wasteful number, since it uses less digits than its factorization.

86524012521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32811832 (or 32811829 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

The spelling of 86524012521 in words is "eighty-six billion, five hundred twenty-four million, twelve thousand, five hundred twenty-one".