90107665494 has 32 divisors (see below), whose sum is σ = 224684050176. Its totient is φ = 23404588320.

The previous prime is 90107665489. The next prime is 90107665513. The reversal of 90107665494 is 49456670109.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97518657 + ... + 97519580.

It is an arithmetic number, because the mean of its divisors is an integer number (7021376568).

Almost surely, 2^90107665494 is an apocalyptic number.

90107665494 is an abundant number, since it is smaller than the sum of its proper divisors (134576384682).

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

90107665494 is a wasteful number, since it uses less digits than its factorization.

90107665494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195038260.

The product of its (nonzero) digits is 1632960, while the sum is 51.

The spelling of 90107665494 in words is "ninety billion, one hundred seven million, six hundred sixty-five thousand, four hundred ninety-four".