90931680000 has 1440 divisors, whose sum is σ = 400495800320. Its totient is φ = 19906560000.

The previous prime is 90931679989. The next prime is 90931680071. The reversal of 90931680000 is 8613909.

It is a tau number, because it is divible by the number of its divisors (1440).

It is a Harshad number since it is a multiple of its sum of digits (36).

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 159 ways as a sum of consecutive naturals, for example, 937439952 + ... + 937440048.

Almost surely, 2^90931680000 is an apocalyptic number.

90931680000 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90931680000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (200247900160).

90931680000 is an abundant number, since it is smaller than the sum of its proper divisors (309564120320).

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

90931680000 is an equidigital number, since it uses as much as digits as its factorization.

90931680000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180 (or 145 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The spelling of 90931680000 in words is "ninety billion, nine hundred thirty-one million, six hundred eighty thousand".