86681998512 has 120 divisors (see below), whose sum is σ = 266459731200. Its totient is φ = 26183101824.

The previous prime is 86681998477. The next prime is 86681998577. The reversal of 86681998512 is 21589918668.

It is a self number, because there is not a number n which added to its sum of digits gives 86681998512.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 625812 + ... + 751667.

It is an arithmetic number, because the mean of its divisors is an integer number (2220497760).

Almost surely, 2^86681998512 is an apocalyptic number.

It is an amenable number.

86681998512 is an abundant number, since it is smaller than the sum of its proper divisors (179777732688).

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

86681998512 is a wasteful number, since it uses less digits than its factorization.

86681998512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1377535 (or 1377526 counting only the distinct ones).

The product of its digits is 14929920, while the sum is 63.

The spelling of 86681998512 in words is "eighty-six billion, six hundred eighty-one million, nine hundred ninety-eight thousand, five hundred twelve".