78047780122 has 32 divisors (see below), whose sum is σ = 129730265280. Its totient is φ = 34987680000.

The previous prime is 78047780093. The next prime is 78047780191. The reversal of 78047780122 is 22108774087.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5122 + ... + 395122.

It is an arithmetic number, because the mean of its divisors is an integer number (4054070790).

Almost surely, 2^78047780122 is an apocalyptic number.

78047780122 is a deficient number, since it is larger than the sum of its proper divisors (51682485158).

78047780122 is a wasteful number, since it uses less digits than its factorization.

78047780122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390238.

The product of its (nonzero) digits is 351232, while the sum is 46.

The spelling of 78047780122 in words is "seventy-eight billion, forty-seven million, seven hundred eighty thousand, one hundred twenty-two".