12647942969 has 4 divisors (see below), whose sum is σ = 12652205940. Its totient is φ = 12643680000.

The previous prime is 12647942953. The next prime is 12647943017. The reversal of 12647942969 is 96924974621.

12647942969 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 521528569 + 12126414400 = 22837^2 + 110120^2 .

It is a cyclic number.

It is not a de Polignac number, because 12647942969 - 2⁴ = 12647942953 is a prime.

It is a super-2 number, since 2×12647942969² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12647942669) 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 3 ways as a sum of consecutive naturals, for example, 2127032 + ... + 2132969.

It is an arithmetic number, because the mean of its divisors is an integer number (3163051485).

Almost surely, 2^12647942969 is an apocalyptic number.

It is an amenable number.

12647942969 is a deficient number, since it is larger than the sum of its proper divisors (4262971).

12647942969 is an equidigital number, since it uses as much as digits as its factorization.

12647942969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4262970.

The product of its digits is 11757312, while the sum is 59.

The spelling of 12647942969 in words is "twelve billion, six hundred forty-seven million, nine hundred forty-two thousand, nine hundred sixty-nine".