779880296447 has 4 divisors (see below), whose sum is σ = 891291767376. Its totient is φ = 668468825520.

The previous prime is 779880296443. The next prime is 779880296453. The reversal of 779880296447 is 744692088977.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 779880296447 - 2² = 779880296443 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (779880296443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55705735454 + ... + 55705735467.

It is an arithmetic number, because the mean of its divisors is an integer number (222822941844).

Almost surely, 2^779880296447 is an apocalyptic number.

779880296447 is a deficient number, since it is larger than the sum of its proper divisors (111411470929).

779880296447 is a wasteful number, since it uses less digits than its factorization.

779880296447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111411470928.

The product of its (nonzero) digits is 341397504, while the sum is 71.

The spelling of 779880296447 in words is "seven hundred seventy-nine billion, eight hundred eighty million, two hundred ninety-six thousand, four hundred forty-seven".