13661216313 has 8 divisors (see below), whose sum is σ = 18251460000. Its totient is φ = 9089225088.

The previous prime is 13661216299. The next prime is 13661216351. The reversal of 13661216313 is 31361216631.

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

It is not a de Polignac number, because 13661216313 - 2¹² = 13661212217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13661256313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4561368 + ... + 4564361.

It is an arithmetic number, because the mean of its divisors is an integer number (2281432500).

Almost surely, 2^13661216313 is an apocalyptic number.

It is an amenable number.

13661216313 is a deficient number, since it is larger than the sum of its proper divisors (4590243687).

13661216313 is an equidigital number, since it uses as much as digits as its factorization.

13661216313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9126231.

The product of its digits is 11664, while the sum is 33.

The spelling of 13661216313 in words is "thirteen billion, six hundred sixty-one million, two hundred sixteen thousand, three hundred thirteen".