779542947792 has 120 divisors (see below), whose sum is σ = 2496039886080. Its totient is φ = 222481808640.

The previous prime is 779542947779. The next prime is 779542947889. The reversal of 779542947792 is 297749245977.

779542947792 is a `hidden beast` number, since 7 + 7 + 9 + 542 + 9 + 4 + 7 + 79 + 2 = 666.

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

It is a self number, because there is not a number n which added to its sum of digits gives 779542947792.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 493834 + ... + 1342742.

It is an arithmetic number, because the mean of its divisors is an integer number (20800332384).

Almost surely, 2^779542947792 is an apocalyptic number.

779542947792 is a gapful number since it is divisible by the number (72) 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 779542947792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1248019943040).

779542947792 is an abundant number, since it is smaller than the sum of its proper divisors (1716496938288).

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

779542947792 is a wasteful number, since it uses less digits than its factorization.

779542947792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 849841 (or 849832 counting only the distinct ones).

The product of its digits is 560105280, while the sum is 72.

The spelling of 779542947792 in words is "seven hundred seventy-nine billion, five hundred forty-two million, nine hundred forty-seven thousand, seven hundred ninety-two".