13365666202645 has 16 divisors (see below), whose sum is σ = 16075347129792. Its totient is φ = 10668178362240.

The previous prime is 13365666202591. The next prime is 13365666202667. The reversal of 13365666202645 is 54620266656331.

13365666202645 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13365666202645 - 2³⁵ = 13331306464277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9540154 + ... + 10851076.

It is an arithmetic number, because the mean of its divisors is an integer number (1004709195612).

Almost surely, 2^{13365666202645} is an apocalyptic number.

It is an amenable number.

13365666202645 is a deficient number, since it is larger than the sum of its proper divisors (2709680927147).

13365666202645 is a wasteful number, since it uses less digits than its factorization.

13365666202645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1315572.

The product of its (nonzero) digits is 27993600, while the sum is 55.

The spelling of 13365666202645 in words is "thirteen trillion, three hundred sixty-five billion, six hundred sixty-six million, two hundred two thousand, six hundred forty-five".