12647641145 has 16 divisors (see below), whose sum is σ = 15332731920. Its totient is φ = 10014603264.

The previous prime is 12647641133. The next prime is 12647641157. The reversal of 12647641145 is 54114674621.

It is an interprime number because it is at equal distance from previous prime (12647641133) and next prime (12647641157).

It can be written as a sum of positive squares in 8 ways, for example, as 1960009984 + 10687631161 = 44272^2 + 103381^2 .

It is a cyclic number.

It is not a de Polignac number, because 12647641145 - 2⁴ = 12647641129 is a prime.

It is a super-2 number, since 2×12647641145² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

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, 520589 + ... + 544341.

It is an arithmetic number, because the mean of its divisors is an integer number (958295745).

Almost surely, 2^12647641145 is an apocalyptic number.

It is an amenable number.

12647641145 is a deficient number, since it is larger than the sum of its proper divisors (2685090775).

12647641145 is a wasteful number, since it uses less digits than its factorization.

12647641145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24844.

The product of its digits is 161280, while the sum is 41.

The spelling of 12647641145 in words is "twelve billion, six hundred forty-seven million, six hundred forty-one thousand, one hundred forty-five".