13260621108815 has 4 divisors (see below), whose sum is σ = 15912745330584. Its totient is φ = 10608496887048.

The previous prime is 13260621108793. The next prime is 13260621108817. The reversal of 13260621108815 is 51880112606231.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13260621108815 - 2²⁶ = 13260553999951 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 (13260621108817) 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, 1326062110877 + ... + 1326062110886.

It is an arithmetic number, because the mean of its divisors is an integer number (3978186332646).

Almost surely, 2^{13260621108815} is an apocalyptic number.

13260621108815 is a deficient number, since it is larger than the sum of its proper divisors (2652124221769).

13260621108815 is an equidigital number, since it uses as much as digits as its factorization.

13260621108815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2652124221768.

The product of its (nonzero) digits is 138240, while the sum is 44.

The spelling of 13260621108815 in words is "thirteen trillion, two hundred sixty billion, six hundred twenty-one million, one hundred eight thousand, eight hundred fifteen".