79613771834 has 4 divisors (see below), whose sum is σ = 119420657754. Its totient is φ = 39806885916.

The previous prime is 79613771807. The next prime is 79613771851. The reversal of 79613771834 is 43817731697.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43817731697 = 3163 ⋅13853219.

It can be written as a sum of positive squares in only one way, i.e., 66746272609 + 12867499225 = 258353^2 + 113435^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 79613771834.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19903442957 + ... + 19903442960.

Almost surely, 2^79613771834 is an apocalyptic number.

79613771834 is a deficient number, since it is larger than the sum of its proper divisors (39806885920).

79613771834 is a wasteful number, since it uses less digits than its factorization.

79613771834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39806885919.

The product of its digits is 5334336, while the sum is 56.

The spelling of 79613771834 in words is "seventy-nine billion, six hundred thirteen million, seven hundred seventy-one thousand, eight hundred thirty-four".