12917448172 has 12 divisors (see below), whose sum is σ = 22607336920. Its totient is φ = 6458209056.

The previous prime is 12917448149. The next prime is 12917448211. The reversal of 12917448172 is 27184471921.

12917448172 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12917448172² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69273 + ... + 175024.

Almost surely, 2^12917448172 is an apocalyptic number.

It is an amenable number.

12917448172 is a deficient number, since it is larger than the sum of its proper divisors (9689888748).

12917448172 is a wasteful number, since it uses less digits than its factorization.

12917448172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257520 (or 257518 counting only the distinct ones).

The product of its digits is 225792, while the sum is 46.

The spelling of 12917448172 in words is "twelve billion, nine hundred seventeen million, four hundred forty-eight thousand, one hundred seventy-two".