79779980897296 has 15 divisors (see below), whose sum is σ = 154573782211263. Its totient is φ = 39889972584720.

The previous prime is 79779980897273. The next prime is 79779980897327. The reversal of 79779980897296 is 69279808997797.

The square root of 79779980897296 is 8931964.

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

It is a super-2 number, since 2×79779980897296² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 79779980897198 and 79779980897207.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 34611361 + ... + 36844351.

Almost surely, 2^{79779980897296} is an apocalyptic number.

79779980897296 is the 8931964-th square number.

It is an amenable number.

79779980897296 is a deficient number, since it is larger than the sum of its proper divisors (74793801313967).

79779980897296 is an frugal number, since it uses more digits than its factorization.

79779980897296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4465990 (or 2232993 counting only the distinct ones).

The product of its (nonzero) digits is 108884466432, while the sum is 97.

The spelling of 79779980897296 in words is "seventy-nine trillion, seven hundred seventy-nine billion, nine hundred eighty million, eight hundred ninety-seven thousand, two hundred ninety-six".