977938317822 has 32 divisors (see below), whose sum is σ = 2025448532640. Its totient is φ = 314585781120.

The previous prime is 977938317803. The next prime is 977938317833. The reversal of 977938317822 is 228713839779.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25187797 + ... + 25226592.

It is an arithmetic number, because the mean of its divisors is an integer number (63295266645).

Almost surely, 2^977938317822 is an apocalyptic number.

977938317822 is an abundant number, since it is smaller than the sum of its proper divisors (1047510214818).

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

977938317822 is a wasteful number, since it uses less digits than its factorization.

977938317822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50414508.

The product of its digits is 64012032, while the sum is 66.

The spelling of 977938317822 in words is "nine hundred seventy-seven billion, nine hundred thirty-eight million, three hundred seventeen thousand, eight hundred twenty-two".