1331443312544 has 48 divisors (see below), whose sum is σ = 2624302800000. Its totient is φ = 664954128384.

The previous prime is 1331443312427. The next prime is 1331443312583. The reversal of 1331443312544 is 4452133441331.

It is a junction number, because it is equal to n+sod(n) for n = 1331443312498 and 1331443312507.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191323337 + ... + 191330295.

It is an arithmetic number, because the mean of its divisors is an integer number (54672975000).

Almost surely, 2^{1331443312544} is an apocalyptic number.

It is an amenable number.

1331443312544 is a deficient number, since it is larger than the sum of its proper divisors (1292859487456).

1331443312544 is a wasteful number, since it uses less digits than its factorization.

1331443312544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13005 (or 12997 counting only the distinct ones).

The product of its digits is 207360, while the sum is 38.

Adding to 1331443312544 its reverse (4452133441331), we get a palindrome (5783576753875).

The spelling of 1331443312544 in words is "one trillion, three hundred thirty-one billion, four hundred forty-three million, three hundred twelve thousand, five hundred forty-four".