79798292474121 has 81 divisors (see below), whose sum is σ = 125989181303349. Its totient is φ = 48648057599232.

The previous prime is 79798292474107. The next prime is 79798292474233. The reversal of 79798292474121 is 12147429289797.

The square root of 79798292474121 is 8932989.

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

79798292474121 is a `hidden beast` number, since 7 + 9 + 7 + 9 + 8 + 29 + 2 + 474 + 121 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 59548832470521 + 20249460003600 = 7716789^2 + 4499940^2 .

It is not a de Polignac number, because 79798292474121 - 2¹³ = 79798292465929 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 79798292474121.

It is not an unprimeable number, because it can be changed into a prime (79798292474321) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 39367681510 + ... + 39367683536.

Almost surely, 2^{79798292474121} is an apocalyptic number.

79798292474121 is the 8932989-th square number.

79798292474121 is the 4466495-th centered octagonal number.

It is an amenable number.

79798292474121 is a deficient number, since it is larger than the sum of its proper divisors (46190888829228).

79798292474121 is an equidigital number, since it uses as much as digits as its factorization.

79798292474121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4312 (or 2156 counting only the distinct ones).

The product of its digits is 256048128, while the sum is 72.

The spelling of 79798292474121 in words is "seventy-nine trillion, seven hundred ninety-eight billion, two hundred ninety-two million, four hundred seventy-four thousand, one hundred twenty-one".