91321443332 has 24 divisors (see below), whose sum is σ = 182963907840. Its totient is φ = 39068971200.

The previous prime is 91321443287. The next prime is 91321443349. The reversal of 91321443332 is 23334412319.

It is a junction number, because it is equal to n+sod(n) for n = 91321443292 and 91321443301.

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, 2850044 + ... + 2881907.

It is an arithmetic number, because the mean of its divisors is an integer number (7623496160).

Almost surely, 2^91321443332 is an apocalyptic number.

It is an amenable number.

91321443332 is an abundant number, since it is smaller than the sum of its proper divisors (91642464508).

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

91321443332 is a wasteful number, since it uses less digits than its factorization.

91321443332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5732531 (or 5732529 counting only the distinct ones).

The product of its digits is 46656, while the sum is 35.

The spelling of 91321443332 in words is "ninety-one billion, three hundred twenty-one million, four hundred forty-three thousand, three hundred thirty-two".