999977762894 has 32 divisors (see below), whose sum is σ = 1693518617952. Its totient is φ = 438877440000.

The previous prime is 999977762893. The next prime is 999977762929. The reversal of 999977762894 is 498267779999.

It is a congruent number.

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

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5627057 + ... + 5802044.

It is an arithmetic number, because the mean of its divisors is an integer number (52922456811).

Almost surely, 2^999977762894 is an apocalyptic number.

999977762894 is a deficient number, since it is larger than the sum of its proper divisors (693540855058).

999977762894 is a wasteful number, since it uses less digits than its factorization.

999977762894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11429252.

The product of its digits is 7777461888, while the sum is 86.

The spelling of 999977762894 in words is "nine hundred ninety-nine billion, nine hundred seventy-seven million, seven hundred sixty-two thousand, eight hundred ninety-four".