91330896384 has 640 divisors, whose sum is σ = 337311744000. Its totient is φ = 23756488704.

The previous prime is 91330896379. The next prime is 91330896389. The reversal of 91330896384 is 48369803319.

It is an interprime number because it is at equal distance from previous prime (91330896379) and next prime (91330896389).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 91330896384.

It is not an unprimeable number, because it can be changed into a prime (91330896389) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 99380277 + ... + 99381195.

It is an arithmetic number, because the mean of its divisors is an integer number (527049600).

Almost surely, 2^91330896384 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91330896384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (168655872000).

91330896384 is an abundant number, since it is smaller than the sum of its proper divisors (245980847616).

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

91330896384 is a wasteful number, since it uses less digits than its factorization.

91330896384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1045 (or 1023 counting only the distinct ones).

The product of its (nonzero) digits is 3359232, while the sum is 54.

The spelling of 91330896384 in words is "ninety-one billion, three hundred thirty million, eight hundred ninety-six thousand, three hundred eighty-four".