990013295808 has 280 divisors, whose sum is σ = 3207585135744. Its totient is φ = 300572467200.

The previous prime is 990013295807. The next prime is 990013295849. The reversal of 990013295808 is 808592310099.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (990013295807) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2550778 + ... + 2913158.

Almost surely, 2^990013295808 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 990013295808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1603792567872).

990013295808 is an abundant number, since it is smaller than the sum of its proper divisors (2217571839936).

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

990013295808 is a wasteful number, since it uses less digits than its factorization.

990013295808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362453 (or 362434 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 54.

It can be divided in two parts, 990013 and 295808, that added together give a palindrome (1285821).

The spelling of 990013295808 in words is "nine hundred ninety billion, thirteen million, two hundred ninety-five thousand, eight hundred eight".