86859476991 has 96 divisors (see below), whose sum is σ = 153214364160. Its totient is φ = 46366048512.

The previous prime is 86859476971. The next prime is 86859477007. The reversal of 86859476991 is 19967495868.

86859476991 is a `hidden beast` number, since 8 + 68 + 5 + 9 + 476 + 9 + 91 = 666.

It is not a de Polignac number, because 86859476991 - 2⁶ = 86859476927 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86859476971) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 8400861 + ... + 8411193.

It is an arithmetic number, because the mean of its divisors is an integer number (1595982960).

Almost surely, 2^86859476991 is an apocalyptic number.

86859476991 is a deficient number, since it is larger than the sum of its proper divisors (66354887169).

86859476991 is a wasteful number, since it uses less digits than its factorization.

86859476991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10525 (or 10522 counting only the distinct ones).

The product of its digits is 235146240, while the sum is 72.

The spelling of 86859476991 in words is "eighty-six billion, eight hundred fifty-nine million, four hundred seventy-six thousand, nine hundred ninety-one".