12629628647 has 4 divisors (see below), whose sum is σ = 13178742960. Its totient is φ = 12080514336.

The previous prime is 12629628631. The next prime is 12629628667. The reversal of 12629628647 is 74682692621.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74682692621 = 21617 ⋅3454813.

It is a cyclic number.

It is not a de Polignac number, because 12629628647 - 2⁴ = 12629628631 is a prime.

It is a super-2 number, since 2×12629628647² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12629628607) 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 3 ways as a sum of consecutive naturals, for example, 274557122 + ... + 274557167.

It is an arithmetic number, because the mean of its divisors is an integer number (3294685740).

Almost surely, 2^12629628647 is an apocalyptic number.

12629628647 is a deficient number, since it is larger than the sum of its proper divisors (549114313).

12629628647 is an equidigital number, since it uses as much as digits as its factorization.

12629628647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549114312.

The product of its digits is 3483648, while the sum is 53.

The spelling of 12629628647 in words is "twelve billion, six hundred twenty-nine million, six hundred twenty-eight thousand, six hundred forty-seven".