90170400708 has 36 divisors (see below), whose sum is σ = 232780329600. Its totient is φ = 29417293296.

The previous prime is 90170400707. The next prime is 90170400731. The reversal of 90170400708 is 80700407109.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (90170400707) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26644408 + ... + 26647791.

Almost surely, 2^90170400708 is an apocalyptic number.

It is an amenable number.

90170400708 is an abundant number, since it is smaller than the sum of its proper divisors (142609928892).

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

90170400708 is a wasteful number, since it uses less digits than its factorization.

90170400708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53292256 (or 53292251 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The spelling of 90170400708 in words is "ninety billion, one hundred seventy million, four hundred thousand, seven hundred eight".