779562007680 has 256 divisors, whose sum is σ = 2521335029760. Its totient is φ = 204851834880.

The previous prime is 779562007661. The next prime is 779562007699. The reversal of 779562007680 is 86700265977.

It is an interprime number because it is at equal distance from previous prime (779562007661) and next prime (779562007699).

It is a self number, because there is not a number n which added to its sum of digits gives 779562007680.

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, 39229107 + ... + 39248973.

It is an arithmetic number, because the mean of its divisors is an integer number (9848964960).

Almost surely, 2^779562007680 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 779562007680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1260667514880).

779562007680 is an abundant number, since it is smaller than the sum of its proper divisors (1741773022080).

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

779562007680 is a wasteful number, since it uses less digits than its factorization.

779562007680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20187 (or 20175 counting only the distinct ones).

The product of its (nonzero) digits is 8890560, while the sum is 57.

The spelling of 779562007680 in words is "seven hundred seventy-nine billion, five hundred sixty-two million, seven thousand, six hundred eighty".