1056644490443 has 4 divisors (see below), whose sum is σ = 1079126288160. Its totient is φ = 1034162692728.

The previous prime is 1056644490439. The next prime is 1056644490449. The reversal of 1056644490443 is 3440944466501.

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

It is a cyclic number.

It is not a de Polignac number, because 1056644490443 - 2² = 1056644490439 is a prime.

It is a super-2 number, since 2×1056644490443² (a number of 25 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 = 1056644490391 and 1056644490400.

It is not an unprimeable number, because it can be changed into a prime (1056644490449) 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, 11240898788 + ... + 11240898881.

It is an arithmetic number, because the mean of its divisors is an integer number (269781572040).

Almost surely, 2^{1056644490443} is an apocalyptic number.

1056644490443 is a deficient number, since it is larger than the sum of its proper divisors (22481797717).

1056644490443 is an equidigital number, since it uses as much as digits as its factorization.

1056644490443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22481797716.

The product of its (nonzero) digits is 4976640, while the sum is 50.

The spelling of 1056644490443 in words is "one trillion, fifty-six billion, six hundred forty-four million, four hundred ninety thousand, four hundred forty-three".