79365594961 has 3 divisors (see below), whose sum is σ = 79365876681. Its totient is φ = 79365313242.

The previous prime is 79365594901. The next prime is 79365594977. The reversal of 79365594961 is 16949556397.

It is a happy number.

The square root of 79365594961 is 281719.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 16949556397 = 27773 ⋅610289.

It is not a de Polignac number, because 79365594961 - 2⁹ = 79365594449 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 79365594893 and 79365594902.

It is not an unprimeable number, because it can be changed into a prime (79365594901) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 140860 + ... + 422578.

It is an arithmetic number, because the mean of its divisors is an integer number (26455292227).

Almost surely, 2^79365594961 is an apocalyptic number.

79365594961 is the 281719-th square number.

79365594961 is the 140860-th centered octagonal number.

It is an amenable number.

79365594961 is a deficient number, since it is larger than the sum of its proper divisors (281720).

79365594961 is an frugal number, since it uses more digits than its factorization.

79365594961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 563438 (or 281719 counting only the distinct ones).

The product of its digits is 55112400, while the sum is 64.

Multiplying 79365594961 by its sum of digits (64), we get a square (5079398077504 = 2253752²).

The spelling of 79365594961 in words is "seventy-nine billion, three hundred sixty-five million, five hundred ninety-four thousand, nine hundred sixty-one".