78790619280 has 80 divisors (see below), whose sum is σ = 252130005504. Its totient is φ = 20333061120.

The previous prime is 78790619239. The next prime is 78790619291. The reversal of 78790619280 is 8291609787.

It is a tau number, because it is divible by the number of its divisors (80).

It is a self number, because there is not a number n which added to its sum of digits gives 78790619280.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5287629 + ... + 5302508.

Almost surely, 2^78790619280 is an apocalyptic number.

It is an amenable number.

78790619280 is an abundant number, since it is smaller than the sum of its proper divisors (173339386224).

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

78790619280 is a wasteful number, since it uses less digits than its factorization.

78790619280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10590184 (or 10590178 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 57.

The spelling of 78790619280 in words is "seventy-eight billion, seven hundred ninety million, six hundred nineteen thousand, two hundred eighty".