990839267712 has 160 divisors (see below), whose sum is σ = 3369967795920. Its totient is φ = 283096912896.

The previous prime is 990839267707. The next prime is 990839267807. The reversal of 990839267712 is 217762938099.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a self number, because there is not a number n which added to its sum of digits gives 990839267712.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 6753643 + ... + 6898794.

Almost surely, 2^990839267712 is an apocalyptic number.

It is an amenable number.

990839267712 is an abundant number, since it is smaller than the sum of its proper divisors (2379128528208).

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

990839267712 is a wasteful number, since it uses less digits than its factorization.

990839267712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13652470 (or 13652449 counting only the distinct ones).

The product of its (nonzero) digits is 20575296, while the sum is 63.

The spelling of 990839267712 in words is "nine hundred ninety billion, eight hundred thirty-nine million, two hundred sixty-seven thousand, seven hundred twelve".