86809009920 has 72 divisors (see below), whose sum is σ = 277246287696. Its totient is φ = 23149068288.

The previous prime is 86809009901. The next prime is 86809009939. The reversal of 86809009920 is 2990090868.

It is an interprime number because it is at equal distance from previous prime (86809009901) and next prime (86809009939).

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, 11299417 + ... + 11307096.

Almost surely, 2^86809009920 is an apocalyptic number.

86809009920 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

86809009920 is an abundant number, since it is smaller than the sum of its proper divisors (190437277776).

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

86809009920 is a wasteful number, since it uses less digits than its factorization.

86809009920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22606537 (or 22606523 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 51.

The spelling of 86809009920 in words is "eighty-six billion, eight hundred nine million, nine thousand, nine hundred twenty".