1445531321444 has 48 divisors (see below), whose sum is σ = 3002392068480. Its totient is φ = 595823370240.

The previous prime is 1445531321363. The next prime is 1445531321477. The reversal of 1445531321444 is 4441231355441.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3254762 + ... + 3672129.

It is an arithmetic number, because the mean of its divisors is an integer number (62549834760).

Almost surely, 2^{1445531321444} is an apocalyptic number.

1445531321444 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1445531321444 is an abundant number, since it is smaller than the sum of its proper divisors (1556860747036).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1445531321444 is a wasteful number, since it uses less digits than its factorization.

1445531321444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6927188 (or 6927186 counting only the distinct ones).

The product of its digits is 460800, while the sum is 41.

Adding to 1445531321444 its reverse (4441231355441), we get a palindrome (5886762676885).

The spelling of 1445531321444 in words is "one trillion, four hundred forty-five billion, five hundred thirty-one million, three hundred twenty-one thousand, four hundred forty-four".