999977762892 has 12 divisors (see below), whose sum is σ = 2333281446776. Its totient is φ = 333325920960.

The previous prime is 999977762881. The next prime is 999977762893. The reversal of 999977762892 is 298267779999.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (999977762893) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 41665740109 + ... + 41665740132.

Almost surely, 2^999977762892 is an apocalyptic number.

It is an amenable number.

999977762892 is an abundant number, since it is smaller than the sum of its proper divisors (1333303683884).

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

999977762892 is a wasteful number, since it uses less digits than its factorization.

999977762892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83331480248 (or 83331480246 counting only the distinct ones).

The product of its digits is 3888730944, while the sum is 84.

The spelling of 999977762892 in words is "nine hundred ninety-nine billion, nine hundred seventy-seven million, seven hundred sixty-two thousand, eight hundred ninety-two".