778125556080 has 160 divisors (see below), whose sum is σ = 2680514061120. Its totient is φ = 207476628480.

The previous prime is 778125556063. The next prime is 778125556099. The reversal of 778125556080 is 80655521877.

778125556080 is a `hidden beast` number, since 7 + 7 + 8 + 1 + 2 + 5 + 556 + 0 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27834910 + ... + 27862850.

It is an arithmetic number, because the mean of its divisors is an integer number (16753212882).

Almost surely, 2^778125556080 is an apocalyptic number.

It is an amenable number.

778125556080 is an abundant number, since it is smaller than the sum of its proper divisors (1902388505040).

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

778125556080 is a wasteful number, since it uses less digits than its factorization.

778125556080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40856 (or 40844 counting only the distinct ones).

The product of its (nonzero) digits is 4704000, while the sum is 54.

The spelling of 778125556080 in words is "seven hundred seventy-eight billion, one hundred twenty-five million, five hundred fifty-six thousand, eighty".