778007578028 has 24 divisors (see below), whose sum is σ = 1450937359872. Its totient is φ = 364173757904.

The previous prime is 778007578013. The next prime is 778007578031. The reversal of 778007578028 is 820875700877.

778007578028 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89959550 + ... + 89968197.

It is an arithmetic number, because the mean of its divisors is an integer number (60455723328).

Almost surely, 2^778007578028 is an apocalyptic number.

It is an amenable number.

778007578028 is a deficient number, since it is larger than the sum of its proper divisors (672929781844).

778007578028 is a wasteful number, since it uses less digits than its factorization.

778007578028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179927821 (or 179927819 counting only the distinct ones).

The product of its (nonzero) digits is 12293120, while the sum is 59.

The spelling of 778007578028 in words is "seven hundred seventy-eight billion, seven million, five hundred seventy-eight thousand, twenty-eight".