779491385764 has 48 divisors (see below), whose sum is σ = 1681524222336. Its totient is φ = 307889049600.

The previous prime is 779491385759. The next prime is 779491385789. The reversal of 779491385764 is 467583194977.

It is a junction number, because it is equal to n+sod(n) for n = 779491385693 and 779491385702.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1437082 + ... + 1903729.

It is an arithmetic number, because the mean of its divisors is an integer number (35031754632).

Almost surely, 2^779491385764 is an apocalyptic number.

It is an amenable number.

779491385764 is an abundant number, since it is smaller than the sum of its proper divisors (902032836572).

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

779491385764 is a wasteful number, since it uses less digits than its factorization.

779491385764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3341476 (or 3341474 counting only the distinct ones).

The product of its digits is 320060160, while the sum is 70.

The spelling of 779491385764 in words is "seven hundred seventy-nine billion, four hundred ninety-one million, three hundred eighty-five thousand, seven hundred sixty-four".