91927383820 has 24 divisors (see below), whose sum is σ = 196689914064. Its totient is φ = 36077161536.

The previous prime is 91927383797. The next prime is 91927383829. The reversal of 91927383820 is 2838372919.

It is not an unprimeable number, because it can be changed into a prime (91927383829) 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, 43360914 + ... + 43363033.

It is an arithmetic number, because the mean of its divisors is an integer number (8195413086).

Almost surely, 2^91927383820 is an apocalyptic number.

It is an amenable number.

91927383820 is an abundant number, since it is smaller than the sum of its proper divisors (104762530244).

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

91927383820 is a wasteful number, since it uses less digits than its factorization.

91927383820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86724009 (or 86724007 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 52.

The spelling of 91927383820 in words is "ninety-one billion, nine hundred twenty-seven million, three hundred eighty-three thousand, eight hundred twenty".