13626664356659 has 4 divisors (see below), whose sum is σ = 13716907167120. Its totient is φ = 13536421546200.

The previous prime is 13626664356629. The next prime is 13626664356689. The reversal of 13626664356659 is 95665346662631.

It is a happy number.

13626664356659 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an interprime number because it is at equal distance from previous prime (13626664356629) and next prime (13626664356689).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13626664356659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13626664356629) 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, 45121405004 + ... + 45121405305.

It is an arithmetic number, because the mean of its divisors is an integer number (3429226791780).

Almost surely, 2^{13626664356659} is an apocalyptic number.

13626664356659 is a deficient number, since it is larger than the sum of its proper divisors (90242810461).

13626664356659 is an equidigital number, since it uses as much as digits as its factorization.

13626664356659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90242810460.

The product of its digits is 755827200, while the sum is 68.

The spelling of 13626664356659 in words is "thirteen trillion, six hundred twenty-six billion, six hundred sixty-four million, three hundred fifty-six thousand, six hundred fifty-nine".