990494624622 has 16 divisors (see below), whose sum is σ = 1981435370832. Its totient is φ = 330090521280.

The previous prime is 990494624579. The next prime is 990494624723. The reversal of 990494624622 is 226426494099.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18559533 + ... + 18612824.

It is an arithmetic number, because the mean of its divisors is an integer number (123839710677).

Almost surely, 2^990494624622 is an apocalyptic number.

990494624622 is an abundant number, since it is smaller than the sum of its proper divisors (990940746210).

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

990494624622 is a wasteful number, since it uses less digits than its factorization.

990494624622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37176803.

The product of its (nonzero) digits is 13436928, while the sum is 57.

The spelling of 990494624622 in words is "nine hundred ninety billion, four hundred ninety-four million, six hundred twenty-four thousand, six hundred twenty-two".