990405651405232 has 20 divisors (see below), whose sum is σ = 1920413620701936. Its totient is φ = 494815039611200.

The previous prime is 990405651405223. The next prime is 990405651405251. The reversal of 990405651405232 is 232504156504099.

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 3 ways as a sum of consecutive naturals, for example, 24236609644 + ... + 24236650507.

Almost surely, 2^{990405651405232} is an apocalyptic number.

It is an amenable number.

990405651405232 is a deficient number, since it is larger than the sum of its proper divisors (930007969296704).

990405651405232 is a wasteful number, since it uses less digits than its factorization.

990405651405232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48473261436 (or 48473261430 counting only the distinct ones).

The product of its (nonzero) digits is 11664000, while the sum is 55.

The spelling of 990405651405232 in words is "nine hundred ninety trillion, four hundred five billion, six hundred fifty-one million, four hundred five thousand, two hundred thirty-two".