78794917744 has 10 divisors (see below), whose sum is σ = 152665153160. Its totient is φ = 39397458864.

The previous prime is 78794917711. The next prime is 78794917753. The reversal of 78794917744 is 44771949787.

It is a self number, because there is not a number n which added to its sum of digits gives 78794917744.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2462341164 + ... + 2462341195.

It is an arithmetic number, because the mean of its divisors is an integer number (15266515316).

Almost surely, 2^78794917744 is an apocalyptic number.

It is an amenable number.

78794917744 is a deficient number, since it is larger than the sum of its proper divisors (73870235416).

78794917744 is a wasteful number, since it uses less digits than its factorization.

78794917744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4924682367 (or 4924682361 counting only the distinct ones).

The product of its digits is 99574272, while the sum is 67.

The spelling of 78794917744 in words is "seventy-eight billion, seven hundred ninety-four million, nine hundred seventeen thousand, seven hundred forty-four".