1331511443144 has 16 divisors (see below), whose sum is σ = 2516242099200. Its totient is φ = 660513550032.

The previous prime is 1331511443057. The next prime is 1331511443149. The reversal of 1331511443144 is 4413441151331.

It is not an unprimeable number, because it can be changed into a prime (1331511443149) 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, 655270364 + ... + 655272395.

It is an arithmetic number, because the mean of its divisors is an integer number (157265131200).

Almost surely, 2^{1331511443144} is an apocalyptic number.

It is an amenable number.

1331511443144 is a deficient number, since it is larger than the sum of its proper divisors (1184730656056).

1331511443144 is a wasteful number, since it uses less digits than its factorization.

1331511443144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1310542892 (or 1310542888 counting only the distinct ones).

The product of its digits is 34560, while the sum is 35.

Adding to 1331511443144 its reverse (4413441151331), we get a palindrome (5744952594475).

The spelling of 1331511443144 in words is "one trillion, three hundred thirty-one billion, five hundred eleven million, four hundred forty-three thousand, one hundred forty-four".