12628839407 has 2 divisors, whose sum is σ = 12628839408. Its totient is φ = 12628839406.

The previous prime is 12628839403. The next prime is 12628839449. The reversal of 12628839407 is 70493882621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12628839407 - 2² = 12628839403 is a prime.

It is a super-2 number, since 2×12628839407² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12628839403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6314419703 + 6314419704.

It is an arithmetic number, because the mean of its divisors is an integer number (6314419704).

Almost surely, 2^12628839407 is an apocalyptic number.

12628839407 is a deficient number, since it is larger than the sum of its proper divisors (1).

12628839407 is an equidigital number, since it uses as much as digits as its factorization.

12628839407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1161216, while the sum is 50.

The spelling of 12628839407 in words is "twelve billion, six hundred twenty-eight million, eight hundred thirty-nine thousand, four hundred seven".