977796634896 has 135 divisors (see below), whose sum is σ = 2888743722501. Its totient is φ = 308706688512.

The previous prime is 977796634811. The next prime is 977796634943. The reversal of 977796634896 is 698436697779.

The square root of 977796634896 is 988836.

It is a perfect power (a square), and thus also a powerful number.

977796634896 is a `hidden beast` number, since 9 + 7 + 7 + 79 + 6 + 63 + 489 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 11240240400 + 966556394496 = 106020^2 + 983136^2 .

It is an unprimeable number.

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 26 ways as a sum of consecutive naturals, for example, 225452440 + ... + 225456776.

Almost surely, 2^977796634896 is an apocalyptic number.

977796634896 is the 988836-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 977796634896

977796634896 is an abundant number, since it is smaller than the sum of its proper divisors (1910947087605).

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

977796634896 is an equidigital number, since it uses as much as digits as its factorization.

977796634896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8726 (or 4361 counting only the distinct ones).

The product of its digits is 5184974592, while the sum is 81.

Multiplying 977796634896 by its sum of digits (81), we get a square (79201527426576 = 8899524²).

The spelling of 977796634896 in words is "nine hundred seventy-seven billion, seven hundred ninety-six million, six hundred thirty-four thousand, eight hundred ninety-six".