12545163412256 has 24 divisors (see below), whose sum is σ = 25010927061120. Its totient is φ = 6193181936448.

The previous prime is 12545163412213. The next prime is 12545163412273. The reversal of 12545163412256 is 65221436154521.

It is a happy number.

It is a super-2 number, since 2×12545163412256² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12545163412256.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2481240236 + ... + 2481245291.

It is an arithmetic number, because the mean of its divisors is an integer number (1042121960880).

Almost surely, 2^{12545163412256} is an apocalyptic number.

12545163412256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12545163412256 is a deficient number, since it is larger than the sum of its proper divisors (12465763648864).

12545163412256 is an equidigital number, since it uses as much as digits as its factorization.

12545163412256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4962485616 (or 4962485608 counting only the distinct ones).

The product of its digits is 1728000, while the sum is 47.

Adding to 12545163412256 its reverse (65221436154521), we get a palindrome (77766599566777).

The spelling of 12545163412256 in words is "twelve trillion, five hundred forty-five billion, one hundred sixty-three million, four hundred twelve thousand, two hundred fifty-six".