977194883808 has 480 divisors, whose sum is σ = 3403082833920. Its totient is φ = 271175869440.

The previous prime is 977194883803. The next prime is 977194883849. The reversal of 977194883808 is 808388491779.

977194883808 is a `hidden beast` number, since 97 + 71 + 94 + 8 + 8 + 380 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (977194883803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 47062933 + ... + 47083691.

It is an arithmetic number, because the mean of its divisors is an integer number (7089755904).

Almost surely, 2^977194883808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 977194883808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1701541416960).

977194883808 is an abundant number, since it is smaller than the sum of its proper divisors (2425887950112).

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

977194883808 is a wasteful number, since it uses less digits than its factorization.

977194883808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20932 (or 20915 counting only the distinct ones).

The product of its (nonzero) digits is 195084288, while the sum is 72.

The spelling of 977194883808 in words is "nine hundred seventy-seven billion, one hundred ninety-four million, eight hundred eighty-three thousand, eight hundred eight".