779538919020 has 48 divisors (see below), whose sum is σ = 2257974804960. Its totient is φ = 200708870656.

The previous prime is 779538918973. The next prime is 779538919087. The reversal of 779538919020 is 20919835977.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 224003697 + ... + 224007176.

It is an arithmetic number, because the mean of its divisors is an integer number (47041141770).

Almost surely, 2^779538919020 is an apocalyptic number.

It is an amenable number.

779538919020 is an abundant number, since it is smaller than the sum of its proper divisors (1478435885940).

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

779538919020 is a wasteful number, since it uses less digits than its factorization.

779538919020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448010914 (or 448010912 counting only the distinct ones).

The product of its (nonzero) digits is 8573040, while the sum is 60.

The spelling of 779538919020 in words is "seven hundred seventy-nine billion, five hundred thirty-eight million, nine hundred nineteen thousand, twenty".