78792357394 has 4 divisors (see below), whose sum is σ = 118188536094. Its totient is φ = 39396178696.

The previous prime is 78792357373. The next prime is 78792357407. The reversal of 78792357394 is 49375329787.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 56138194225 + 22654163169 = 236935^2 + 150513^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19698089347 + ... + 19698089350.

Almost surely, 2^78792357394 is an apocalyptic number.

78792357394 is a deficient number, since it is larger than the sum of its proper divisors (39396178700).

78792357394 is a wasteful number, since it uses less digits than its factorization.

78792357394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39396178699.

The product of its digits is 80015040, while the sum is 64.

The spelling of 78792357394 in words is "seventy-eight billion, seven hundred ninety-two million, three hundred fifty-seven thousand, three hundred ninety-four".