12456449997 has 8 divisors (see below), whose sum is σ = 16961974656. Its totient is φ = 8127612672.

The previous prime is 12456449939. The next prime is 12456450031. The reversal of 12456449997 is 79994465421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12456449997 - 2¹⁵ = 12456417229 is a prime.

It is a super-2 number, since 2×12456449997² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12456449997.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12456449927) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44171668 + ... + 44171949.

It is an arithmetic number, because the mean of its divisors is an integer number (2120246832).

Almost surely, 2^12456449997 is an apocalyptic number.

It is an amenable number.

12456449997 is a deficient number, since it is larger than the sum of its proper divisors (4505524659).

12456449997 is an equidigital number, since it uses as much as digits as its factorization.

12456449997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88343667.

The product of its digits is 19595520, while the sum is 60.

The spelling of 12456449997 in words is "twelve billion, four hundred fifty-six million, four hundred forty-nine thousand, nine hundred ninety-seven".