86236510521 has 32 divisors (see below), whose sum is σ = 140899184640. Its totient is φ = 45792205056.

The previous prime is 86236510517. The next prime is 86236510543. The reversal of 86236510521 is 12501563268.

It is not a de Polignac number, because 86236510521 - 2² = 86236510517 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 86236510521.

It is not an unprimeable number, because it can be changed into a prime (86236510121) 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, 1500651 + ... + 1557056.

It is an arithmetic number, because the mean of its divisors is an integer number (4403099520).

Almost surely, 2^86236510521 is an apocalyptic number.

It is an amenable number.

86236510521 is a deficient number, since it is larger than the sum of its proper divisors (54662674119).

86236510521 is a wasteful number, since it uses less digits than its factorization.

86236510521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3057813.

The product of its (nonzero) digits is 86400, while the sum is 39.

The spelling of 86236510521 in words is "eighty-six billion, two hundred thirty-six million, five hundred ten thousand, five hundred twenty-one".