779387783977 has 16 divisors (see below), whose sum is σ = 895020134400. Its totient is φ = 671221034640.

The previous prime is 779387783959. The next prime is 779387783981.

779387783977 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 779387783977 - 2²⁷ = 779253566249 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 779387783977.

It is not an unprimeable number, because it can be changed into a prime (779387783917) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11905228 + ... + 11970514.

It is an arithmetic number, because the mean of its divisors is an integer number (55938758400).

Almost surely, 2^779387783977 is an apocalyptic number.

It is an amenable number.

779387783977 is a deficient number, since it is larger than the sum of its proper divisors (115632350423).

779387783977 is a wasteful number, since it uses less digits than its factorization.

779387783977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122436.

The product of its digits is 5489031744, while the sum is 82.

The spelling of 779387783977 in words is "seven hundred seventy-nine billion, three hundred eighty-seven million, seven hundred eighty-three thousand, nine hundred seventy-seven".