10644000440443 has 16 divisors (see below), whose sum is σ = 11316077718400. Its totient is φ = 10011243743208.

The previous prime is 10644000440377. The next prime is 10644000440471. The reversal of 10644000440443 is 34404400044601.

It is a de Polignac number, because none of the positive numbers 2^k-10644000440443 is a prime.

It is a super-2 number, since 2×10644000440443² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10644000440399 and 10644000440408.

It is not an unprimeable number, because it can be changed into a prime (10644000440543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4628721 + ... + 6535522.

It is an arithmetic number, because the mean of its divisors is an integer number (707254857400).

Almost surely, 2^{10644000440443} is an apocalyptic number.

10644000440443 is a deficient number, since it is larger than the sum of its proper divisors (672077277957).

10644000440443 is an equidigital number, since it uses as much as digits as its factorization.

10644000440443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11164439 (or 11164401 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 34.

The spelling of 10644000440443 in words is "ten trillion, six hundred forty-four billion, four hundred forty thousand, four hundred forty-three".