79942224997 has 4 divisors (see below), whose sum is σ = 80003390976. Its totient is φ = 79881059020.

The previous prime is 79942224977. The next prime is 79942225087.

79942224997 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 79942224997 - 2²⁷ = 79808007269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79942224917) 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 3 ways as a sum of consecutive naturals, for example, 30581029 + ... + 30583642.

It is an arithmetic number, because the mean of its divisors is an integer number (20000847744).

Almost surely, 2^79942224997 is an apocalyptic number.

It is an amenable number.

79942224997 is a deficient number, since it is larger than the sum of its proper divisors (61165979).

79942224997 is a wasteful number, since it uses less digits than its factorization.

79942224997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61165978.

The product of its digits is 41150592, while the sum is 64.

The spelling of 79942224997 in words is "seventy-nine billion, nine hundred forty-two million, two hundred twenty-four thousand, nine hundred ninety-seven".