86640374968 has 64 divisors (see below), whose sum is σ = 190255469760. Its totient is φ = 36220194816.

The previous prime is 86640374921. The next prime is 86640374987. The reversal of 86640374968 is 86947304668.

It is a congruent number.

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, 429096 + ... + 597832.

It is an arithmetic number, because the mean of its divisors is an integer number (2972741715).

Almost surely, 2^86640374968 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 86640374968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95127734880).

86640374968 is an abundant number, since it is smaller than the sum of its proper divisors (103615094792).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

86640374968 is a wasteful number, since it uses less digits than its factorization.

86640374968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168976 (or 168972 counting only the distinct ones).

The product of its (nonzero) digits is 41803776, while the sum is 61.

The spelling of 86640374968 in words is "eighty-six billion, six hundred forty million, three hundred seventy-four thousand, nine hundred sixty-eight".