779049887616 has 2304 divisors, whose sum is σ = 3362371084800. Its totient is φ = 166617907200.

The previous prime is 779049887587. The next prime is 779049887639. The reversal of 779049887616 is 616788940977.

779049887616 is a `hidden beast` number, since 7 + 79 + 0 + 498 + 8 + 7 + 61 + 6 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 21055402350 + ... + 21055402386.

It is an arithmetic number, because the mean of its divisors is an integer number (1459362450).

Almost surely, 2^779049887616 is an apocalyptic number.

779049887616 is a gapful number since it is divisible by the number (76) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 779049887616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1681185542400).

779049887616 is an abundant number, since it is smaller than the sum of its proper divisors (2583321197184).

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

779049887616 is a wasteful number, since it uses less digits than its factorization.

779049887616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169 (or 123 counting only the distinct ones).

The product of its (nonzero) digits is 256048128, while the sum is 72.

The spelling of 779049887616 in words is "seven hundred seventy-nine billion, forty-nine million, eight hundred eighty-seven thousand, six hundred sixteen".