79693639697 has 16 divisors (see below), whose sum is σ = 91963175040. Its totient is φ = 67645753728.

The previous prime is 79693639693. The next prime is 79693639741.

79693639697 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 79693639697 - 2² = 79693639693 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79693639693) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2205863 + ... + 2241699.

It is an arithmetic number, because the mean of its divisors is an integer number (5747698440).

Almost surely, 2^79693639697 is an apocalyptic number.

It is an amenable number.

79693639697 is a deficient number, since it is larger than the sum of its proper divisors (12269535343).

79693639697 is a wasteful number, since it uses less digits than its factorization.

79693639697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38920.

The product of its digits is 624974616, while the sum is 74.

The spelling of 79693639697 in words is "seventy-nine billion, six hundred ninety-three million, six hundred thirty-nine thousand, six hundred ninety-seven".