86915216331 has 6 divisors (see below), whose sum is σ = 125544201380. Its totient is φ = 57943477548.

The previous prime is 86915216329. The next prime is 86915216347. The reversal of 86915216331 is 13361251968.

86915216331 is a `hidden beast` number, since 8 + 6 + 9 + 1 + 5 + 2 + 1 + 633 + 1 = 666.

It is not a de Polignac number, because 86915216331 - 2¹ = 86915216329 is a prime.

It is a super-2 number, since 2×86915216331² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86915216351) 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, 4828623121 + ... + 4828623138.

Almost surely, 2^86915216331 is an apocalyptic number.

86915216331 is a deficient number, since it is larger than the sum of its proper divisors (38628985049).

86915216331 is a wasteful number, since it uses less digits than its factorization.

86915216331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9657246265 (or 9657246262 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The spelling of 86915216331 in words is "eighty-six billion, nine hundred fifteen million, two hundred sixteen thousand, three hundred thirty-one".