990020312044 has 6 divisors (see below), whose sum is σ = 1732535546084. Its totient is φ = 495010156020.

The previous prime is 990020312027. The next prime is 990020312077. The reversal of 990020312044 is 440213020099.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123752539002 + ... + 123752539009.

Almost surely, 2^990020312044 is an apocalyptic number.

It is an amenable number.

990020312044 is a deficient number, since it is larger than the sum of its proper divisors (742515234040).

990020312044 is a wasteful number, since it uses less digits than its factorization.

990020312044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247505078015 (or 247505078013 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 34.

The spelling of 990020312044 in words is "nine hundred ninety billion, twenty million, three hundred twelve thousand, forty-four".