90998826464 has 96 divisors (see below), whose sum is σ = 220599884736. Its totient is φ = 35982766080.

The previous prime is 90998826439. The next prime is 90998826521. The reversal of 90998826464 is 46462889909.

It is a self number, because there is not a number n which added to its sum of digits gives 90998826464.

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, 7614734 + ... + 7626674.

It is an arithmetic number, because the mean of its divisors is an integer number (2297915466).

Almost surely, 2^90998826464 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 90998826464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110299942368).

90998826464 is an abundant number, since it is smaller than the sum of its proper divisors (129601058272).

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

90998826464 is a wasteful number, since it uses less digits than its factorization.

90998826464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14588 (or 14580 counting only the distinct ones).

The product of its (nonzero) digits is 53747712, while the sum is 65.

The spelling of 90998826464 in words is "ninety billion, nine hundred ninety-eight million, eight hundred twenty-six thousand, four hundred sixty-four".