86775939968 has 64 divisors (see below), whose sum is σ = 179166243600. Its totient is φ = 41814269952.

The previous prime is 86775939967. The next prime is 86775939977. The reversal of 86775939968 is 86993957768.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86775939967) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2009096 + ... + 2051832.

Almost surely, 2^86775939968 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 86775939968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89583121800).

86775939968 is an abundant number, since it is smaller than the sum of its proper divisors (92390303632).

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

86775939968 is a wasteful number, since it uses less digits than its factorization.

86775939968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43327 (or 43315 counting only the distinct ones).

The product of its digits is 1234517760, while the sum is 77.

The spelling of 86775939968 in words is "eighty-six billion, seven hundred seventy-five million, nine hundred thirty-nine thousand, nine hundred sixty-eight".