12647180997 has 60 divisors (see below), whose sum is σ = 20851313868. Its totient is φ = 7633612800.

The previous prime is 12647180969. The next prime is 12647181007. The reversal of 12647180997 is 79908174621.

12647180997 is a `hidden beast` number, since 1 + 2 + 6 + 471 + 80 + 9 + 97 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 12054063681 + 593117316 = 109791^2 + 24354^2 .

It is not a de Polignac number, because 12647180997 - 2⁶ = 12647180933 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12647184997) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 2516347 + ... + 2521367.

Almost surely, 2^12647180997 is an apocalyptic number.

It is an amenable number.

12647180997 is a deficient number, since it is larger than the sum of its proper divisors (8204132871).

12647180997 is a wasteful number, since it uses less digits than its factorization.

12647180997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5312 (or 5292 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 54.

The spelling of 12647180997 in words is "twelve billion, six hundred forty-seven million, one hundred eighty thousand, nine hundred ninety-seven".