79624042697 has 4 divisors (see below), whose sum is σ = 79635462036. Its totient is φ = 79612623360.

The previous prime is 79624042669. The next prime is 79624042709.

79624042697 is nontrivially palindromic in base 10.

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 29260155136 + 50363887561 = 171056^2 + 224419^2 .

It is a cyclic number.

It is not a de Polignac number, because 79624042697 - 2⁸ = 79624042441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79624042637) 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, 5699204 + ... + 5713157.

It is an arithmetic number, because the mean of its divisors is an integer number (19908865509).

Almost surely, 2^79624042697 is an apocalyptic number.

It is an amenable number.

79624042697 is a deficient number, since it is larger than the sum of its proper divisors (11419339).

79624042697 is a wasteful number, since it uses less digits than its factorization.

79624042697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11419338.

The product of its (nonzero) digits is 9144576, while the sum is 56.

The spelling of 79624042697 in words is "seventy-nine billion, six hundred twenty-four million, forty-two thousand, six hundred ninety-seven".