13444895021 has 8 divisors (see below), whose sum is σ = 14045816064. Its totient is φ = 12854424960.

The previous prime is 13444894963. The next prime is 13444895053. The reversal of 13444895021 is 12059844431.

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

It is a cyclic number.

It is not a de Polignac number, because 13444895021 - 2²² = 13440700717 is a prime.

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 13444895021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13444895081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2610116 + ... + 2615261.

It is an arithmetic number, because the mean of its divisors is an integer number (1755727008).

Almost surely, 2^13444895021 is an apocalyptic number.

It is an amenable number.

13444895021 is a deficient number, since it is larger than the sum of its proper divisors (600921043).

13444895021 is an equidigital number, since it uses as much as digits as its factorization.

13444895021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5225491.

The product of its (nonzero) digits is 138240, while the sum is 41.

The spelling of 13444895021 in words is "thirteen billion, four hundred forty-four million, eight hundred ninety-five thousand, twenty-one".