990373547220 has 24 divisors (see below), whose sum is σ = 2773045932384. Its totient is φ = 264099612576.

The previous prime is 990373547213. The next prime is 990373547263. The reversal of 990373547220 is 22745373099.

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, 8253112834 + ... + 8253112953.

It is an arithmetic number, because the mean of its divisors is an integer number (115543580516).

Almost surely, 2^990373547220 is an apocalyptic number.

It is an amenable number.

990373547220 is an abundant number, since it is smaller than the sum of its proper divisors (1782672385164).

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

990373547220 is a wasteful number, since it uses less digits than its factorization.

990373547220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16506225799 (or 16506225797 counting only the distinct ones).

The product of its (nonzero) digits is 2857680, while the sum is 51.

The spelling of 990373547220 in words is "nine hundred ninety billion, three hundred seventy-three million, five hundred forty-seven thousand, two hundred twenty".