12447515297 has 16 divisors (see below), whose sum is σ = 14538258432. Its totient is φ = 10435212240.

The previous prime is 12447515261. The next prime is 12447515303. The reversal of 12447515297 is 79251574421.

It is a cyclic number.

It is not a de Polignac number, because 12447515297 - 2⁶ = 12447515233 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12447515897) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 504818 + ... + 528900.

It is an arithmetic number, because the mean of its divisors is an integer number (908641152).

Almost surely, 2^12447515297 is an apocalyptic number.

It is an amenable number.

12447515297 is a deficient number, since it is larger than the sum of its proper divisors (2090743135).

12447515297 is a wasteful number, since it uses less digits than its factorization.

12447515297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25708.

The product of its digits is 705600, while the sum is 47.

The spelling of 12447515297 in words is "twelve billion, four hundred forty-seven million, five hundred fifteen thousand, two hundred ninety-seven".