91689073932 has 24 divisors (see below), whose sum is σ = 213998803200. Its totient is φ = 30554791696.

The previous prime is 91689073919. The next prime is 91689073939. The reversal of 91689073932 is 23937098619.

It is not an unprimeable number, because it can be changed into a prime (91689073939) 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, 982632 + ... + 1071887.

It is an arithmetic number, because the mean of its divisors is an integer number (8916616800).

Almost surely, 2^91689073932 is an apocalyptic number.

It is an amenable number.

91689073932 is an abundant number, since it is smaller than the sum of its proper divisors (122309729268).

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

91689073932 is a wasteful number, since it uses less digits than its factorization.

91689073932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2058245 (or 2058243 counting only the distinct ones).

The product of its (nonzero) digits is 4408992, while the sum is 57.

The spelling of 91689073932 in words is "ninety-one billion, six hundred eighty-nine million, seventy-three thousand, nine hundred thirty-two".