779065788864 has 224 divisors, whose sum is σ = 2289708806400. Its totient is φ = 231782031360.

The previous prime is 779065788859. The next prime is 779065788947. The reversal of 779065788864 is 468887560977.

It is a congruent number.

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, 109277652 + ... + 109284780.

Almost surely, 2^779065788864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 779065788864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1144854403200).

779065788864 is an abundant number, since it is smaller than the sum of its proper divisors (1510643017536).

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

779065788864 is a wasteful number, since it uses less digits than its factorization.

With its successor (779065788865) it forms a Ruth-Aaron pair, since the sum of their prime factors is the same (8091).

779065788864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8091 (or 8081 counting only the distinct ones).

The product of its (nonzero) digits is 1137991680, while the sum is 75.

The spelling of 779065788864 in words is "seven hundred seventy-nine billion, sixty-five million, seven hundred eighty-eight thousand, eight hundred sixty-four".