977118812 has 24 divisors (see below), whose sum is σ = 1744708896. Its totient is φ = 478657088.

The previous prime is 977118811. The next prime is 977118817. The reversal of 977118812 is 218811779.

It is a super-2 number, since 2×977118812² = 1909522345528582688, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (977118811) 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 7 ways as a sum of consecutive naturals, for example, 166073 + ... + 171855.

It is an arithmetic number, because the mean of its divisors is an integer number (72696204).

Almost surely, 2^977118812 is an apocalyptic number.

It is an amenable number.

977118812 is a deficient number, since it is larger than the sum of its proper divisors (767590084).

977118812 is a wasteful number, since it uses less digits than its factorization.

977118812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6637 (or 6635 counting only the distinct ones).

The product of its digits is 56448, while the sum is 44.

The square root of 977118812 is about 31258.8997247184. The cubic root of 977118812 is about 992.3140143055.

The spelling of 977118812 in words is "nine hundred seventy-seven million, one hundred eighteen thousand, eight hundred twelve".