13215631063 has 4 divisors (see below), whose sum is σ = 13292022168. Its totient is φ = 13139239960.

The previous prime is 13215631061. The next prime is 13215631087. The reversal of 13215631063 is 36013651231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36013651231 = 3793 ⋅9494767.

It is a cyclic number.

It is not a de Polignac number, because 13215631063 - 2¹ = 13215631061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13215631061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38195293 + ... + 38195638.

It is an arithmetic number, because the mean of its divisors is an integer number (3323005542).

Almost surely, 2^13215631063 is an apocalyptic number.

13215631063 is a deficient number, since it is larger than the sum of its proper divisors (76391105).

13215631063 is an equidigital number, since it uses as much as digits as its factorization.

13215631063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76391104.

The product of its (nonzero) digits is 9720, while the sum is 31.

The spelling of 13215631063 in words is "thirteen billion, two hundred fifteen million, six hundred thirty-one thousand, sixty-three".