90715455488 has 168 divisors, whose sum is σ = 219848533632. Its totient is φ = 36540776448.

The previous prime is 90715455449. The next prime is 90715455511. The reversal of 90715455488 is 88455451709.

It is a Harshad number since it is a multiple of its sum of digits (56).

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, 124780181 + ... + 124780907.

It is an arithmetic number, because the mean of its divisors is an integer number (1308622224).

Almost surely, 2^90715455488 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 90715455488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109924266816).

90715455488 is an abundant number, since it is smaller than the sum of its proper divisors (129133078144).

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

90715455488 is an frugal number, since it uses more digits than its factorization.

90715455488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 791 (or 753 counting only the distinct ones).

The product of its (nonzero) digits is 8064000, while the sum is 56.

The spelling of 90715455488 in words is "ninety billion, seven hundred fifteen million, four hundred fifty-five thousand, four hundred eighty-eight".