79688436678244 has 27 divisors (see below), whose sum is σ = 144430307731801. Its totient is φ = 38470029824240.

The previous prime is 79688436678211. The next prime is 79688436678283. The reversal of 79688436678244 is 44287663488697.

The square root of 79688436678244 is 8926838.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 41786683204644 + 37901753473600 = 6464262^2 + 6156440^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 517679649 + ... + 517833559.

Almost surely, 2^{79688436678244} is an apocalyptic number.

79688436678244 is the 8926838-th square number.

It is an amenable number.

79688436678244 is a deficient number, since it is larger than the sum of its proper divisors (64741871053557).

79688436678244 is an frugal number, since it uses more digits than its factorization.

79688436678244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307884 (or 153942 counting only the distinct ones).

The product of its digits is 18728091648, while the sum is 82.

The spelling of 79688436678244 in words is "seventy-nine trillion, six hundred eighty-eight billion, four hundred thirty-six million, six hundred seventy-eight thousand, two hundred forty-four".