86521012568 has 16 divisors (see below), whose sum is σ = 167820930000. Its totient is φ = 41768764576.

The previous prime is 86521012561. The next prime is 86521012577.

86521012568 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86521012561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 186467468 + ... + 186467931.

It is an arithmetic number, because the mean of its divisors is an integer number (10488808125).

Almost surely, 2^86521012568 is an apocalyptic number.

It is an amenable number.

86521012568 is a deficient number, since it is larger than the sum of its proper divisors (81299917432).

86521012568 is a wasteful number, since it uses less digits than its factorization.

86521012568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372935434 (or 372935430 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 44.

It can be divided in two parts, 865210 and 12568, that added together give a palindrome (877778).

The spelling of 86521012568 in words is "eighty-six billion, five hundred twenty-one million, twelve thousand, five hundred sixty-eight".