91395980052 has 24 divisors (see below), whose sum is σ = 229661693856. Its totient is φ = 28121839968.

The previous prime is 91395979973. The next prime is 91395980063. The reversal of 91395980052 is 25008959319.

It is a junction number, because it is equal to n+sod(n) for n = 91395979977 and 91395980004.

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, 292935678 + ... + 292935989.

It is an arithmetic number, because the mean of its divisors is an integer number (9569237244).

Almost surely, 2^91395980052 is an apocalyptic number.

It is an amenable number.

91395980052 is an abundant number, since it is smaller than the sum of its proper divisors (138265713804).

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

91395980052 is a wasteful number, since it uses less digits than its factorization.

91395980052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 585871687 (or 585871685 counting only the distinct ones).

The product of its (nonzero) digits is 874800, while the sum is 51.

The spelling of 91395980052 in words is "ninety-one billion, three hundred ninety-five million, nine hundred eighty thousand, fifty-two".