779153899680 has 192 divisors, whose sum is σ = 2936811064320. Its totient is φ = 191791715328.

The previous prime is 779153899669. The next prime is 779153899681. The reversal of 779153899680 is 86998351977.

779153899680 is a `hidden beast` number, since 7 + 7 + 9 + 1 + 538 + 9 + 9 + 6 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a junction number, because it is equal to n+sod(n) for n = 779153899599 and 779153899608.

It is not an unprimeable number, because it can be changed into a prime (779153899681) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6880752 + ... + 6993071.

It is an arithmetic number, because the mean of its divisors is an integer number (15295890960).

Almost surely, 2^779153899680 is an apocalyptic number.

It is an amenable number.

779153899680 is an abundant number, since it is smaller than the sum of its proper divisors (2157657164640).

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

779153899680 is a wasteful number, since it uses less digits than its factorization.

779153899680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13873860 (or 13873846 counting only the distinct ones).

The product of its (nonzero) digits is 205752960, while the sum is 72.

The spelling of 779153899680 in words is "seven hundred seventy-nine billion, one hundred fifty-three million, eight hundred ninety-nine thousand, six hundred eighty".