90974568090 has 128 divisors (see below), whose sum is σ = 255584305152. Its totient is φ = 20290636800.

The previous prime is 90974568011. The next prime is 90974568103. The reversal of 90974568090 is 9086547909.

It is a self number, because there is not a number n which added to its sum of digits gives 90974568090.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10389154 + ... + 10397906.

It is an arithmetic number, because the mean of its divisors is an integer number (1996752384).

Almost surely, 2^90974568090 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90974568090, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127792152576).

90974568090 is an abundant number, since it is smaller than the sum of its proper divisors (164609737062).

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

90974568090 is a wasteful number, since it uses less digits than its factorization.

90974568090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9964.

The product of its (nonzero) digits is 4898880, while the sum is 57.

The spelling of 90974568090 in words is "ninety billion, nine hundred seventy-four million, five hundred sixty-eight thousand, ninety".