13366218645 has 112 divisors (see below), whose sum is σ = 26009972352. Its totient is φ = 6551902080.

The previous prime is 13366218623. The next prime is 13366218647. The reversal of 13366218645 is 54681266331.

13366218645 is a `hidden beast` number, since 13 + 3 + 6 + 621 + 8 + 6 + 4 + 5 = 666.

13366218645 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 13366218645 - 2⁸ = 13366218389 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 13366218645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13366218647) 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 111 ways as a sum of consecutive naturals, for example, 14736282 + ... + 14737188.

It is an arithmetic number, because the mean of its divisors is an integer number (232231896).

Almost surely, 2^13366218645 is an apocalyptic number.

13366218645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13366218645 is a deficient number, since it is larger than the sum of its proper divisors (12643753707).

13366218645 is an equidigital number, since it uses as much as digits as its factorization.

13366218645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1254 (or 1239 counting only the distinct ones).

The product of its digits is 622080, while the sum is 45.

The spelling of 13366218645 in words is "thirteen billion, three hundred sixty-six million, two hundred eighteen thousand, six hundred forty-five".