86993739918 has 12 divisors (see below), whose sum is σ = 188486436528. Its totient is φ = 28997913300.

The previous prime is 86993739893. The next prime is 86993739947. The reversal of 86993739918 is 81993739968.

It is a happy number.

86993739918 is a `hidden beast` number, since 86 + 99 + 373 + 9 + 91 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2416492758 + ... + 2416492793.

It is an arithmetic number, because the mean of its divisors is an integer number (15707203044).

Almost surely, 2^86993739918 is an apocalyptic number.

86993739918 is an abundant number, since it is smaller than the sum of its proper divisors (101492696610).

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

86993739918 is a wasteful number, since it uses less digits than its factorization.

86993739918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4832985559 (or 4832985556 counting only the distinct ones).

The product of its digits is 158723712, while the sum is 72.

The spelling of 86993739918 in words is "eighty-six billion, nine hundred ninety-three million, seven hundred thirty-nine thousand, nine hundred eighteen".