79879497897 has 4 divisors (see below), whose sum is σ = 106505997200. Its totient is φ = 53252998596.

The previous prime is 79879497889. The next prime is 79879497911.

79879497897 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 not a de Polignac number, because 79879497897 - 2³ = 79879497889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79879497857) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13313249647 + ... + 13313249652.

It is an arithmetic number, because the mean of its divisors is an integer number (26626499300).

Almost surely, 2^79879497897 is an apocalyptic number.

It is an amenable number.

79879497897 is a deficient number, since it is larger than the sum of its proper divisors (26626499303).

79879497897 is a wasteful number, since it uses less digits than its factorization.

79879497897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26626499302.

The product of its digits is 4032758016, while the sum is 84.

The spelling of 79879497897 in words is "seventy-nine billion, eight hundred seventy-nine million, four hundred ninety-seven thousand, eight hundred ninety-seven".