12447174832128 has 156 divisors (see below), whose sum is σ = 37285752497448. Its totient is φ = 4149057945600.

The previous prime is 12447174832117. The next prime is 12447174832129. The reversal of 12447174832128 is 82123847174421.

12447174832128 is a `hidden beast` number, since 1 + 2 + 4 + 471 + 7 + 48 + 3 + 2 + 128 = 666.

It is a super-2 number, since 2×12447174832128² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (12447174832129) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 5257473 + ... + 7248128.

It is an arithmetic number, because the mean of its divisors is an integer number (239011233958).

Almost surely, 2^{12447174832128} is an apocalyptic number.

12447174832128 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

12447174832128 is an abundant number, since it is smaller than the sum of its proper divisors (24838577665320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12447174832128 is an frugal number, since it uses more digits than its factorization.

12447174832128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12505640 (or 12505606 counting only the distinct ones).

The product of its digits is 4816896, while the sum is 54.

The spelling of 12447174832128 in words is "twelve trillion, four hundred forty-seven billion, one hundred seventy-four million, eight hundred thirty-two thousand, one hundred twenty-eight".