91719535432 has 32 divisors (see below), whose sum is σ = 196819156800. Its totient is φ = 39252913344.

The previous prime is 91719535403. The next prime is 91719535441. The reversal of 91719535432 is 23453591719.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1115338 + ... + 1194745.

It is an arithmetic number, because the mean of its divisors is an integer number (6150598650).

Almost surely, 2^91719535432 is an apocalyptic number.

It is an amenable number.

91719535432 is an abundant number, since it is smaller than the sum of its proper divisors (105099621368).

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

91719535432 is a wasteful number, since it uses less digits than its factorization.

91719535432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2310805 (or 2310801 counting only the distinct ones).

The product of its digits is 1020600, while the sum is 49.

The spelling of 91719535432 in words is "ninety-one billion, seven hundred nineteen million, five hundred thirty-five thousand, four hundred thirty-two".