779278069332 has 384 divisors, whose sum is σ = 2487779840000. Its totient is φ = 210863634912.

The previous prime is 779278069303. The next prime is 779278069363. The reversal of 779278069332 is 233960872977.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a self number, because there is not a number n which added to its sum of digits gives 779278069332.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 254083263 + ... + 254086329.

Almost surely, 2^779278069332 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 779278069332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1243889920000).

779278069332 is an abundant number, since it is smaller than the sum of its proper divisors (1708501770668).

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

779278069332 is a wasteful number, since it uses less digits than its factorization.

779278069332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3158 (or 3098 counting only the distinct ones).

The product of its (nonzero) digits is 48009024, while the sum is 63.

The spelling of 779278069332 in words is "seven hundred seventy-nine billion, two hundred seventy-eight million, sixty-nine thousand, three hundred thirty-two".