977768124432 has 160 divisors (see below), whose sum is σ = 2918251791360. Its totient is φ = 279180802560.

The previous prime is 977768124349. The next prime is 977768124449. The reversal of 977768124432 is 234421867779.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 212794 + ... + 1414502.

It is an arithmetic number, because the mean of its divisors is an integer number (18239073696).

Almost surely, 2^977768124432 is an apocalyptic number.

977768124432 is a gapful number since it is divisible by the number (92) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 977768124432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1459125895680).

977768124432 is an abundant number, since it is smaller than the sum of its proper divisors (1940483666928).

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

977768124432 is a wasteful number, since it uses less digits than its factorization.

977768124432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1201821 (or 1201815 counting only the distinct ones).

The product of its digits is 28449792, while the sum is 60.

The spelling of 977768124432 in words is "nine hundred seventy-seven billion, seven hundred sixty-eight million, one hundred twenty-four thousand, four hundred thirty-two".