1344644365653 has 24 divisors (see below), whose sum is σ = 2053416466400. Its totient is φ = 845540537184.

The previous prime is 1344644365633. The next prime is 1344644365657. The reversal of 1344644365653 is 3565634464431.

1344644365653 is a `hidden beast` number, since 1 + 3 + 4 + 4 + 6 + 44 + 36 + 565 + 3 = 666.

It is not a de Polignac number, because 1344644365653 - 2⁵ = 1344644365621 is a prime.

It is a super-2 number, since 2×1344644365653² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1344644365653.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1344644365657) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17129875 + ... + 17208192.

Almost surely, 2^{1344644365653} is an apocalyptic number.

It is an amenable number.

1344644365653 is a deficient number, since it is larger than the sum of its proper divisors (708772100747).

1344644365653 is a wasteful number, since it uses less digits than its factorization.

1344644365653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34338321 (or 34338318 counting only the distinct ones).

The product of its digits is 37324800, while the sum is 54.

The spelling of 1344644365653 in words is "one trillion, three hundred forty-four billion, six hundred forty-four million, three hundred sixty-five thousand, six hundred fifty-three".