79418980174321 has 4 divisors (see below), whose sum is σ = 80720930669044. Its totient is φ = 78117029679600.

The previous prime is 79418980174301. The next prime is 79418980174393. The reversal of 79418980174321 is 12347108981497.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 43686812160000 + 35732168014321 = 6609600^2 + 5977639^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79418980174321 is a prime.

It is a super-2 number, since 2×79418980174321² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79418980174301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 650975247270 + ... + 650975247391.

It is an arithmetic number, because the mean of its divisors is an integer number (20180232667261).

Almost surely, 2^{79418980174321} is an apocalyptic number.

It is an amenable number.

79418980174321 is a deficient number, since it is larger than the sum of its proper divisors (1301950494723).

79418980174321 is a wasteful number, since it uses less digits than its factorization.

79418980174321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1301950494722.

The product of its (nonzero) digits is 24385536, while the sum is 64.

The spelling of 79418980174321 in words is "seventy-nine trillion, four hundred eighteen billion, nine hundred eighty million, one hundred seventy-four thousand, three hundred twenty-one".