990747369984 has 80 divisors (see below), whose sum is σ = 2754170096832. Its totient is φ = 315890454528.

The previous prime is 990747369979. The next prime is 990747369991. The reversal of 990747369984 is 489963747099.

It is a happy number.

It is a super-2 number, since 2×990747369984² (a number of 25 digits) contains 22 as substring.

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, 13986799 + ... + 14057454.

Almost surely, 2^990747369984 is an apocalyptic number.

It is an amenable number.

990747369984 is an abundant number, since it is smaller than the sum of its proper divisors (1763422726848).

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

990747369984 is a wasteful number, since it uses less digits than its factorization.

990747369984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28044297 (or 28044281 counting only the distinct ones).

The product of its (nonzero) digits is 740710656, while the sum is 75.

The spelling of 990747369984 in words is "nine hundred ninety billion, seven hundred forty-seven million, three hundred sixty-nine thousand, nine hundred eighty-four".