91895318320 has 360 divisors, whose sum is σ = 254553863760. Its totient is φ = 30795448320.

The previous prime is 91895318299. The next prime is 91895318341. The reversal of 91895318320 is 2381359819.

It is an interprime number because it is at equal distance from previous prime (91895318299) and next prime (91895318341).

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 71 ways as a sum of consecutive naturals, for example, 113310715 + ... + 113311525.

It is an arithmetic number, because the mean of its divisors is an integer number (707094066).

Almost surely, 2^91895318320 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 91895318320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127276931880).

91895318320 is an abundant number, since it is smaller than the sum of its proper divisors (162658545440).

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

91895318320 is a wasteful number, since it uses less digits than its factorization.

91895318320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 913 (or 877 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 49.

The spelling of 91895318320 in words is "ninety-one billion, eight hundred ninety-five million, three hundred eighteen thousand, three hundred twenty".