12446979497 has 4 divisors (see below), whose sum is σ = 12711808896. Its totient is φ = 12182150100.

The previous prime is 12446979469. The next prime is 12446979499. The reversal of 12446979497 is 79497964421.

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 not a de Polignac number, because 12446979497 - 2⁸ = 12446979241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12446979499) 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, 132414629 + ... + 132414722.

It is an arithmetic number, because the mean of its divisors is an integer number (3177952224).

Almost surely, 2^12446979497 is an apocalyptic number.

It is an amenable number.

12446979497 is a deficient number, since it is larger than the sum of its proper divisors (264829399).

12446979497 is an equidigital number, since it uses as much as digits as its factorization.

12446979497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264829398.

The product of its digits is 27433728, while the sum is 62.

The spelling of 12446979497 in words is "twelve billion, four hundred forty-six million, nine hundred seventy-nine thousand, four hundred ninety-seven".