91322089892 has 12 divisors (see below), whose sum is σ = 174342171696. Its totient is φ = 41510040840.

The previous prime is 91322089879. The next prime is 91322089913. The reversal of 91322089892 is 29898022319.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1037750978 + ... + 1037751065.

It is an arithmetic number, because the mean of its divisors is an integer number (14528514308).

Almost surely, 2^91322089892 is an apocalyptic number.

It is an amenable number.

91322089892 is a deficient number, since it is larger than the sum of its proper divisors (83020081804).

91322089892 is a wasteful number, since it uses less digits than its factorization.

91322089892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2075502058 (or 2075502056 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 53.

The spelling of 91322089892 in words is "ninety-one billion, three hundred twenty-two million, eighty-nine thousand, eight hundred ninety-two".