6624129613 has 2 divisors, whose sum is σ = 6624129614. Its totient is φ = 6624129612.

The previous prime is 6624129587. The next prime is 6624129623. The reversal of 6624129613 is 3169214266.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6182205129 + 441924484 = 78627^2 + 21022^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6624129613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6624129623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3312064806 + 3312064807.

It is an arithmetic number, because the mean of its divisors is an integer number (3312064807).

Almost surely, 2^6624129613 is an apocalyptic number.

It is an amenable number.

6624129613 is a deficient number, since it is larger than the sum of its proper divisors (1).

6624129613 is an equidigital number, since it uses as much as digits as its factorization.

6624129613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 93312, while the sum is 40.

The square root of 6624129613 is about 81388.7560600357. The cubic root of 6624129613 is about 1878.0606238910.

The spelling of 6624129613 in words is "six billion, six hundred twenty-four million, one hundred twenty-nine thousand, six hundred thirteen".