13615680721241 has 4 divisors (see below), whose sum is σ = 13626741389184. Its totient is φ = 13604620053300.

The previous prime is 13615680721231. The next prime is 13615680721259. The reversal of 13615680721241 is 14212708651631.

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 not a de Polignac number, because 13615680721241 - 2⁶ = 13615680721177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13615680721211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5530332125 + ... + 5530334586.

It is an arithmetic number, because the mean of its divisors is an integer number (3406685347296).

Almost surely, 2^{13615680721241} is an apocalyptic number.

It is an amenable number.

13615680721241 is a deficient number, since it is larger than the sum of its proper divisors (11060667943).

13615680721241 is a wasteful number, since it uses less digits than its factorization.

13615680721241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11060667942.

The product of its (nonzero) digits is 483840, while the sum is 47.

The spelling of 13615680721241 in words is "thirteen trillion, six hundred fifteen billion, six hundred eighty million, seven hundred twenty-one thousand, two hundred forty-one".