79181314122897 has 20 divisors (see below), whose sum is σ = 135180797304256. Its totient is φ = 45246465212760.

The previous prime is 79181314122887. The next prime is 79181314122899. The reversal of 79181314122897 is 79822141318197.

79181314122897 is a `hidden beast` number, since 7 + 9 + 1 + 8 + 1 + 314 + 1 + 228 + 97 = 666.

It is not a de Polignac number, because 79181314122897 - 2⁴ = 79181314122881 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79181314122899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 69824791429 + ... + 69824792562.

Almost surely, 2^{79181314122897} is an apocalyptic number.

It is an amenable number.

79181314122897 is a deficient number, since it is larger than the sum of its proper divisors (55999483181359).

79181314122897 is a wasteful number, since it uses less digits than its factorization.

79181314122897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139649584010 (or 139649584001 counting only the distinct ones).

The product of its digits is 12192768, while the sum is 63.

The spelling of 79181314122897 in words is "seventy-nine trillion, one hundred eighty-one billion, three hundred fourteen million, one hundred twenty-two thousand, eight hundred ninety-seven".