86638662912 has 72 divisors (see below), whose sum is σ = 244149062976. Its totient is φ = 27180752896.

The previous prime is 86638662893. The next prime is 86638662923. The reversal of 86638662912 is 21926683668.

It is a super-2 number, since 2×86638662912² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3304908 + ... + 3331019.

It is an arithmetic number, because the mean of its divisors is an integer number (3390959208).

Almost surely, 2^86638662912 is an apocalyptic number.

It is an amenable number.

86638662912 is an abundant number, since it is smaller than the sum of its proper divisors (157510400064).

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

86638662912 is a wasteful number, since it uses less digits than its factorization.

86638662912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6635963 (or 6635949 counting only the distinct ones).

The product of its digits is 8957952, while the sum is 57.

The spelling of 86638662912 in words is "eighty-six billion, six hundred thirty-eight million, six hundred sixty-two thousand, nine hundred twelve".