13644144566 has 8 divisors (see below), whose sum is σ = 22040541264. Its totient is φ = 6297297480.

The previous prime is 13644144559. The next prime is 13644144593. The reversal of 13644144566 is 66544144631.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 262387370 + ... + 262387421.

It is an arithmetic number, because the mean of its divisors is an integer number (2755067658).

Almost surely, 2^13644144566 is an apocalyptic number.

13644144566 is a deficient number, since it is larger than the sum of its proper divisors (8396396698).

13644144566 is a wasteful number, since it uses less digits than its factorization.

13644144566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524774806.

The product of its digits is 829440, while the sum is 44.

The spelling of 13644144566 in words is "thirteen billion, six hundred forty-four million, one hundred forty-four thousand, five hundred sixty-six".