13631521153 has 4 divisors (see below), whose sum is σ = 13631770368. Its totient is φ = 13631271940.

The previous prime is 13631521147. The next prime is 13631521157. The reversal of 13631521153 is 35112513631.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13631521153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13631521157) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3001 + ... + 165142.

It is an arithmetic number, because the mean of its divisors is an integer number (3407942592).

Almost surely, 2^13631521153 is an apocalyptic number.

It is an amenable number.

13631521153 is a deficient number, since it is larger than the sum of its proper divisors (249215).

13631521153 is an equidigital number, since it uses as much as digits as its factorization.

13631521153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249214.

The product of its digits is 8100, while the sum is 31.

The spelling of 13631521153 in words is "thirteen billion, six hundred thirty-one million, five hundred twenty-one thousand, one hundred fifty-three".