90911042658 has 64 divisors (see below), whose sum is σ = 202971254400. Its totient is φ = 30161989440.

The previous prime is 90911042609. The next prime is 90911042669. The reversal of 90911042658 is 85624011909.

90911042658 is a `hidden beast` number, since 90 + 91 + 1 + 0 + 426 + 58 = 666.

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 31 ways as a sum of consecutive naturals, for example, 11667828 + ... + 11675616.

It is an arithmetic number, because the mean of its divisors is an integer number (3171425850).

Almost surely, 2^90911042658 is an apocalyptic number.

90911042658 is an abundant number, since it is smaller than the sum of its proper divisors (112060211742).

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

90911042658 is a wasteful number, since it uses less digits than its factorization.

90911042658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8784 (or 8778 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The spelling of 90911042658 in words is "ninety billion, nine hundred eleven million, forty-two thousand, six hundred fifty-eight".