86208566931 has 6 divisors (see below), whose sum is σ = 124523485580. Its totient is φ = 57472377948.

The previous prime is 86208566897. The next prime is 86208566959. The reversal of 86208566931 is 13966580268.

It is a happy number.

86208566931 is a `hidden beast` number, since 8 + 620 + 8 + 5 + 6 + 6 + 9 + 3 + 1 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-86208566931 is a prime.

It is a super-2 number, since 2×86208566931² (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 (86208561931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4789364821 + ... + 4789364838.

Almost surely, 2^86208566931 is an apocalyptic number.

86208566931 is a deficient number, since it is larger than the sum of its proper divisors (38314918649).

86208566931 is a wasteful number, since it uses less digits than its factorization.

86208566931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9578729665 (or 9578729662 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 54.

The spelling of 86208566931 in words is "eighty-six billion, two hundred eight million, five hundred sixty-six thousand, nine hundred thirty-one".