12547677443 has 16 divisors (see below), whose sum is σ = 14615838720. Its totient is φ = 10548566496.

The previous prime is 12547677437. The next prime is 12547677449. The reversal of 12547677443 is 34477674521.

It is an interprime number because it is at equal distance from previous prime (12547677437) and next prime (12547677449).

It is a cyclic number.

It is not a de Polignac number, because 12547677443 - 2⁴ = 12547677427 is a prime.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 12547677391 and 12547677400.

It is not an unprimeable number, because it can be changed into a prime (12547677449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1895846 + ... + 1902452.

It is an arithmetic number, because the mean of its divisors is an integer number (913489920).

Almost surely, 2^12547677443 is an apocalyptic number.

12547677443 is a deficient number, since it is larger than the sum of its proper divisors (2068161277).

12547677443 is an equidigital number, since it uses as much as digits as its factorization.

12547677443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11786.

The product of its digits is 3951360, while the sum is 50.

The spelling of 12547677443 in words is "twelve billion, five hundred forty-seven million, six hundred seventy-seven thousand, four hundred forty-three".