999381372992 has 14 divisors (see below), whose sum is σ = 1983147412158. Its totient is φ = 499690686464.

The previous prime is 999381372973. The next prime is 999381373007. The reversal of 999381372992 is 299273183999.

It can be written as a sum of positive squares in only one way, i.e., 971296975936 + 28084397056 = 985544^2 + 167584^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7807666913 + ... + 7807667040.

Almost surely, 2^999381372992 is an apocalyptic number.

It is an amenable number.

999381372992 is a deficient number, since it is larger than the sum of its proper divisors (983766039166).

999381372992 is a wasteful number, since it uses less digits than its factorization.

999381372992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15615333965 (or 15615333955 counting only the distinct ones).

The product of its digits is 119042784, while the sum is 71.

The spelling of 999381372992 in words is "nine hundred ninety-nine billion, three hundred eighty-one million, three hundred seventy-two thousand, nine hundred ninety-two".