79723335994 has 4 divisors (see below), whose sum is σ = 119585003994. Its totient is φ = 39861667996.

The previous prime is 79723335973. The next prime is 79723336003. The reversal of 79723335994 is 49953332797.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 49953332797 = 17 ⋅2938431341.

It can be written as a sum of positive squares in only one way, i.e., 46316635369 + 33406700625 = 215213^2 + 182775^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19930833997 + ... + 19930834000.

Almost surely, 2^79723335994 is an apocalyptic number.

79723335994 is a deficient number, since it is larger than the sum of its proper divisors (39861668000).

79723335994 is a wasteful number, since it uses less digits than its factorization.

79723335994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39861667999.

The product of its digits is 38578680, while the sum is 61.

The spelling of 79723335994 in words is "seventy-nine billion, seven hundred twenty-three million, three hundred thirty-five thousand, nine hundred ninety-four".