12417997679 has 4 divisors (see below), whose sum is σ = 12652299576. Its totient is φ = 12183695784.

The previous prime is 12417997663. The next prime is 12417997721. The reversal of 12417997679 is 97679971421.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12417997679 - 2⁴ = 12417997663 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12417997279) 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, 117150869 + ... + 117150974.

It is an arithmetic number, because the mean of its divisors is an integer number (3163074894).

Almost surely, 2^12417997679 is an apocalyptic number.

12417997679 is a deficient number, since it is larger than the sum of its proper divisors (234301897).

12417997679 is an equidigital number, since it uses as much as digits as its factorization.

12417997679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234301896.

The product of its digits is 12002256, while the sum is 62.

The spelling of 12417997679 in words is "twelve billion, four hundred seventeen million, nine hundred ninety-seven thousand, six hundred seventy-nine".