90106831108 has 48 divisors (see below), whose sum is σ = 184963330944. Its totient is φ = 37603042560.

The previous prime is 90106831097. The next prime is 90106831151. The reversal of 90106831108 is 80113860109.

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, 525366 + ... + 675442.

It is an arithmetic number, because the mean of its divisors is an integer number (3853402728).

Almost surely, 2^90106831108 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90106831108, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92481665472).

90106831108 is an abundant number, since it is smaller than the sum of its proper divisors (94856499836).

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

90106831108 is a wasteful number, since it uses less digits than its factorization.

90106831108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150652 (or 150650 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 37.

The spelling of 90106831108 in words is "ninety billion, one hundred six million, eight hundred thirty-one thousand, one hundred eight".