13444644643353 has 96 divisors (see below), whose sum is σ = 26261511075072. Its totient is φ = 6413066956800.

The previous prime is 13444644643303. The next prime is 13444644643447. The reversal of 13444644643353 is 35334644644431.

It is a happy number.

13444644643353 is a `hidden beast` number, since 1 + 3 + 4 + 44 + 64 + 464 + 33 + 53 = 666.

It is not a de Polignac number, because 13444644643353 - 2¹⁴ = 13444644626969 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13444644643353.

It is not an unprimeable number, because it can be changed into a prime (13444644643303) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 13434226 + ... + 14400267.

It is an arithmetic number, because the mean of its divisors is an integer number (273557407032).

Almost surely, 2^{13444644643353} is an apocalyptic number.

It is an amenable number.

13444644643353 is a deficient number, since it is larger than the sum of its proper divisors (12816866431719).

13444644643353 is a wasteful number, since it uses less digits than its factorization.

13444644643353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27834575 (or 27834572 counting only the distinct ones).

The product of its digits is 59719680, while the sum is 54.

The spelling of 13444644643353 in words is "thirteen trillion, four hundred forty-four billion, six hundred forty-four million, six hundred forty-three thousand, three hundred fifty-three".