79989698997 has 24 divisors (see below), whose sum is σ = 124490175264. Its totient is φ = 49199999904.

The previous prime is 79989698989. The next prime is 79989699047.

It is a happy number.

79989698997 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 79989698997 - 2³ = 79989698989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79989698497) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 68518 + ... + 405800.

It is an arithmetic number, because the mean of its divisors is an integer number (5187090636).

Almost surely, 2^79989698997 is an apocalyptic number.

It is an amenable number.

79989698997 is a deficient number, since it is larger than the sum of its proper divisors (44500476267).

79989698997 is a wasteful number, since it uses less digits than its factorization.

79989698997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339329 (or 339326 counting only the distinct ones).

The product of its digits is 9999593856, while the sum is 90.

The spelling of 79989698997 in words is "seventy-nine billion, nine hundred eighty-nine million, six hundred ninety-eight thousand, nine hundred ninety-seven".