13644636260215 has 8 divisors (see below), whose sum is σ = 16373595701808. Its totient is φ = 10915687548480.

The previous prime is 13644636260197. The next prime is 13644636260231. The reversal of 13644636260215 is 51206263644631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-13644636260215 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 447099 + ... + 5243011.

It is an arithmetic number, because the mean of its divisors is an integer number (2046699462726).

Almost surely, 2^{13644636260215} is an apocalyptic number.

13644636260215 is a deficient number, since it is larger than the sum of its proper divisors (2728959441593).

13644636260215 is an equidigital number, since it uses as much as digits as its factorization.

13644636260215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5364929.

The product of its (nonzero) digits is 3732480, while the sum is 49.

The spelling of 13644636260215 in words is "thirteen trillion, six hundred forty-four billion, six hundred thirty-six million, two hundred sixty thousand, two hundred fifteen".