90916491375 has 24 divisors (see below), whose sum is σ = 163892130480. Its totient is φ = 48488794800.

The previous prime is 90916491371. The next prime is 90916491401. The reversal of 90916491375 is 57319461909.

It is not a de Polignac number, because 90916491375 - 2² = 90916491371 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90916491371) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40406205 + ... + 40408454.

It is an arithmetic number, because the mean of its divisors is an integer number (6828838770).

Almost surely, 2^90916491375 is an apocalyptic number.

90916491375 is a deficient number, since it is larger than the sum of its proper divisors (72975639105).

90916491375 is a wasteful number, since it uses less digits than its factorization.

90916491375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80814680 (or 80814667 counting only the distinct ones).

The product of its (nonzero) digits is 1837080, while the sum is 54.

The spelling of 90916491375 in words is "ninety billion, nine hundred sixteen million, four hundred ninety-one thousand, three hundred seventy-five".