86865985888 has 48 divisors (see below), whose sum is σ = 186595765776. Its totient is φ = 39477911040.

The previous prime is 86865985883. The next prime is 86865985897. The reversal of 86865985888 is 88858956868.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86865985883) 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, 2521870 + ... + 2556082.

It is an arithmetic number, because the mean of its divisors is an integer number (3887411787).

Almost surely, 2^86865985888 is an apocalyptic number.

86865985888 is a gapful number since it is divisible by the number (88) formed by its first and last digit.

It is an amenable number.

86865985888 is an abundant number, since it is smaller than the sum of its proper divisors (99729779888).

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

86865985888 is a wasteful number, since it uses less digits than its factorization.

86865985888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41447 (or 41439 counting only the distinct ones).

The product of its digits is 2123366400, while the sum is 79.

The spelling of 86865985888 in words is "eighty-six billion, eight hundred sixty-five million, nine hundred eighty-five thousand, eight hundred eighty-eight".