13634521223 has 2 divisors, whose sum is σ = 13634521224. Its totient is φ = 13634521222.

The previous prime is 13634521211. The next prime is 13634521253. The reversal of 13634521223 is 32212543631.

It is a weak prime.

It is an emirp because it is prime and its reverse (32212543631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13634521223 - 2⁴ = 13634521207 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13634521223.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13634521253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6817260611 + 6817260612.

It is an arithmetic number, because the mean of its divisors is an integer number (6817260612).

Almost surely, 2^13634521223 is an apocalyptic number.

13634521223 is a deficient number, since it is larger than the sum of its proper divisors (1).

13634521223 is an equidigital number, since it uses as much as digits as its factorization.

13634521223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 32.

The spelling of 13634521223 in words is "thirteen billion, six hundred thirty-four million, five hundred twenty-one thousand, two hundred twenty-three".