10444944721 has 4 divisors (see below), whose sum is σ = 11059353252. Its totient is φ = 9830536192.

The previous prime is 10444944683. The next prime is 10444944733. The reversal of 10444944721 is 12744944401.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6027348496 + 4417596225 = 77636^2 + 66465^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10444944721 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10444944121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 307204240 + ... + 307204273.

It is an arithmetic number, because the mean of its divisors is an integer number (2764838313).

Almost surely, 2^10444944721 is an apocalyptic number.

It is an amenable number.

10444944721 is a deficient number, since it is larger than the sum of its proper divisors (614408531).

10444944721 is an equidigital number, since it uses as much as digits as its factorization.

10444944721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 614408530.

The product of its (nonzero) digits is 129024, while the sum is 40.

The spelling of 10444944721 in words is "ten billion, four hundred forty-four million, nine hundred forty-four thousand, seven hundred twenty-one".