90455558784 has 64 divisors (see below), whose sum is σ = 246766470240. Its totient is φ = 29336933376.

The previous prime is 90455558759. The next prime is 90455558813. The reversal of 90455558784 is 48785555409.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×90455558784² (a number of 23 digits) contains 22 as substring.

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, 3169054 + ... + 3197469.

Almost surely, 2^90455558784 is an apocalyptic number.

It is an amenable number.

90455558784 is an abundant number, since it is smaller than the sum of its proper divisors (156310911456).

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

90455558784 is a wasteful number, since it uses less digits than its factorization.

90455558784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6366577 (or 6366565 counting only the distinct ones).

The product of its (nonzero) digits is 40320000, while the sum is 60.

The spelling of 90455558784 in words is "ninety billion, four hundred fifty-five million, five hundred fifty-eight thousand, seven hundred eighty-four".