13646252813 has 2 divisors, whose sum is σ = 13646252814. Its totient is φ = 13646252812.

The previous prime is 13646252759. The next prime is 13646252821. The reversal of 13646252813 is 31825264631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13118953444 + 527299369 = 114538^2 + 22963^2 .

It is an emirp because it is prime and its reverse (31825264631) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13646252813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13646252833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6823126406 + 6823126407.

It is an arithmetic number, because the mean of its divisors is an integer number (6823126407).

Almost surely, 2^13646252813 is an apocalyptic number.

It is an amenable number.

13646252813 is a deficient number, since it is larger than the sum of its proper divisors (1).

13646252813 is an equidigital number, since it uses as much as digits as its factorization.

13646252813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 207360, while the sum is 41.

The spelling of 13646252813 in words is "thirteen billion, six hundred forty-six million, two hundred fifty-two thousand, eight hundred thirteen".