1331413365573 has 24 divisors (see below), whose sum is σ = 2038796487000. Its totient is φ = 834363915264.

The previous prime is 1331413365551. The next prime is 1331413365691. The reversal of 1331413365573 is 3755633141331.

1331413365573 is a `hidden beast` number, since 1 + 3 + 3 + 1 + 4 + 13 + 3 + 65 + 573 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 302815782369 + 1028597583204 = 550287^2 + 1014198^2 .

It is not a de Polignac number, because 1331413365573 - 2¹⁰ = 1331413364549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331413365473) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5254498 + ... + 5502051.

It is an arithmetic number, because the mean of its divisors is an integer number (84949853625).

Almost surely, 2^{1331413365573} is an apocalyptic number.

It is an amenable number.

1331413365573 is a deficient number, since it is larger than the sum of its proper divisors (707383121427).

1331413365573 is a wasteful number, since it uses less digits than its factorization.

1331413365573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10757381 (or 10757378 counting only the distinct ones).

The product of its digits is 1020600, while the sum is 45.

The spelling of 1331413365573 in words is "one trillion, three hundred thirty-one billion, four hundred thirteen million, three hundred sixty-five thousand, five hundred seventy-three".