14446661643 has 6 divisors (see below), whose sum is σ = 20867400164. Its totient is φ = 9631107756.

The previous prime is 14446661639. The next prime is 14446661651. The reversal of 14446661643 is 34616664441.

It is a happy number.

It is not a de Polignac number, because 14446661643 - 2² = 14446661639 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14446661743) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 802592305 + ... + 802592322.

Almost surely, 2^14446661643 is an apocalyptic number.

14446661643 is a deficient number, since it is larger than the sum of its proper divisors (6420738521).

14446661643 is a wasteful number, since it uses less digits than its factorization.

14446661643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1605184633 (or 1605184630 counting only the distinct ones).

The product of its digits is 995328, while the sum is 45.

The spelling of 14446661643 in words is "fourteen billion, four hundred forty-six million, six hundred sixty-one thousand, six hundred forty-three".