12658398417 has 32 divisors (see below), whose sum is σ = 21437491200. Its totient is φ = 7231587984.

The previous prime is 12658398331. The next prime is 12658398433. The reversal of 12658398417 is 71489385621.

12658398417 is a `hidden beast` number, since 1 + 2 + 65 + 83 + 98 + 417 = 666.

It is not a de Polignac number, because 12658398417 - 2⁸ = 12658398161 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12658398017) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1353684 + ... + 1363002.

It is an arithmetic number, because the mean of its divisors is an integer number (669921600).

Almost surely, 2^12658398417 is an apocalyptic number.

It is an amenable number.

12658398417 is a deficient number, since it is larger than the sum of its proper divisors (8779092783).

12658398417 is an equidigital number, since it uses as much as digits as its factorization.

12658398417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16522 (or 16516 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 54.

The spelling of 12658398417 in words is "twelve billion, six hundred fifty-eight million, three hundred ninety-eight thousand, four hundred seventeen".