86640080875 has 16 divisors (see below), whose sum is σ = 108141153120. Its totient is φ = 69302877600.

The previous prime is 86640080861. The next prime is 86640080887. The reversal of 86640080875 is 57808004668.

It is not a de Polignac number, because 86640080875 - 2¹⁵ = 86640048107 is a prime.

It is a super-2 number, since 2×86640080875² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 994836 + ... + 1078414.

It is an arithmetic number, because the mean of its divisors is an integer number (6758822070).

Almost surely, 2^86640080875 is an apocalyptic number.

86640080875 is a deficient number, since it is larger than the sum of its proper divisors (21501072245).

86640080875 is an equidigital number, since it uses as much as digits as its factorization.

86640080875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91887 (or 91877 counting only the distinct ones).

The product of its (nonzero) digits is 2580480, while the sum is 52.

The spelling of 86640080875 in words is "eighty-six billion, six hundred forty million, eighty thousand, eight hundred seventy-five".