13663455113645 has 4 divisors (see below), whose sum is σ = 16396146136380. Its totient is φ = 10930764090912.

The previous prime is 13663455113579. The next prime is 13663455113681. The reversal of 13663455113645 is 54631155436631.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1561315224676 + 12102139888969 = 1249526^2 + 3478813^2 .

It is a cyclic number.

It is not a de Polignac number, because 13663455113645 - 2⁸ = 13663455113389 is a prime.

It is a super-3 number, since 3×13663455113645³ (a number of 40 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1366345511360 + ... + 1366345511369.

It is an arithmetic number, because the mean of its divisors is an integer number (4099036534095).

Almost surely, 2^{13663455113645} is an apocalyptic number.

It is an amenable number.

13663455113645 is a deficient number, since it is larger than the sum of its proper divisors (2732691022735).

13663455113645 is an equidigital number, since it uses as much as digits as its factorization.

13663455113645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2732691022734.

The product of its digits is 11664000, while the sum is 53.

The spelling of 13663455113645 in words is "thirteen trillion, six hundred sixty-three billion, four hundred fifty-five million, one hundred thirteen thousand, six hundred forty-five".