78785774844108 has 96 divisors (see below), whose sum is σ = 188863681036800. Its totient is φ = 25548360574464.

The previous prime is 78785774844047. The next prime is 78785774844191. The reversal of 78785774844108 is 80144847758787.

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, 198294873 + ... + 198691791.

It is an arithmetic number, because the mean of its divisors is an integer number (1967330010800).

Almost surely, 2^{78785774844108} is an apocalyptic number.

It is an amenable number.

78785774844108 is an abundant number, since it is smaller than the sum of its proper divisors (110077906192692).

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

78785774844108 is a wasteful number, since it uses less digits than its factorization.

78785774844108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398511 (or 398509 counting only the distinct ones).

The product of its (nonzero) digits is 3147038720, while the sum is 78.

The spelling of 78785774844108 in words is "seventy-eight trillion, seven hundred eighty-five billion, seven hundred seventy-four million, eight hundred forty-four thousand, one hundred eight".