1344445788889 has 32 divisors (see below), whose sum is σ = 1571581760000. Its totient is φ = 1149655332672.

The previous prime is 1344445788887. The next prime is 1344445788913. The reversal of 1344445788889 is 9888875444431.

It is not a de Polignac number, because 1344445788889 - 2¹ = 1344445788887 is a prime.

It is a super-2 number, since 2×1344445788889² (a number of 25 digits) contains 22 as substring.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (1344445788887) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 303964732 + ... + 303969154.

It is an arithmetic number, because the mean of its divisors is an integer number (49111930000).

Almost surely, 2^{1344445788889} is an apocalyptic number.

1344445788889 is the 733334-th heptagonal number.

It is an amenable number.

1344445788889 is a deficient number, since it is larger than the sum of its proper divisors (227135971111).

1344445788889 is an equidigital number, since it uses as much as digits as its factorization.

1344445788889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6342 (or 6328 counting only the distinct ones).

The product of its digits is 990904320, while the sum is 73.

The spelling of 1344445788889 in words is "one trillion, three hundred forty-four billion, four hundred forty-five million, seven hundred eighty-eight thousand, eight hundred eighty-nine".