79866466897 has 4 divisors (see below), whose sum is σ = 91275962176. Its totient is φ = 68456971620.

The previous prime is 79866466891. The next prime is 79866466931.

79866466897 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 a de Polignac number, because none of the positive numbers 2^k-79866466897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (79866466891) 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, 5704747629 + ... + 5704747642.

It is an arithmetic number, because the mean of its divisors is an integer number (22818990544).

Almost surely, 2^79866466897 is an apocalyptic number.

It is an amenable number.

79866466897 is a deficient number, since it is larger than the sum of its proper divisors (11409495279).

79866466897 is a wasteful number, since it uses less digits than its factorization.

79866466897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11409495278.

The product of its digits is 1316818944, while the sum is 76.

The spelling of 79866466897 in words is "seventy-nine billion, eight hundred sixty-six million, four hundred sixty-six thousand, eight hundred ninety-seven".