77579838974 has 12 divisors (see below), whose sum is σ = 127910561352. Its totient is φ = 35263563060.

The previous prime is 77579838967. The next prime is 77579838977. The reversal of 77579838974 is 47983897577.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77579838977) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 160288682 + ... + 160289165.

It is an arithmetic number, because the mean of its divisors is an integer number (10659213446).

Almost surely, 2^77579838974 is an apocalyptic number.

77579838974 is a deficient number, since it is larger than the sum of its proper divisors (50330722378).

77579838974 is a wasteful number, since it uses less digits than its factorization.

77579838974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320577871 (or 320577860 counting only the distinct ones).

The product of its digits is 746807040, while the sum is 74.

The spelling of 77579838974 in words is "seventy-seven billion, five hundred seventy-nine million, eight hundred thirty-eight thousand, nine hundred seventy-four".