1331237590399 has 2 divisors, whose sum is σ = 1331237590400. Its totient is φ = 1331237590398.

The previous prime is 1331237590391. The next prime is 1331237590421. The reversal of 1331237590399 is 9930957321331.

It is a weak prime.

It is an emirp because it is prime and its reverse (9930957321331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1331237590399 - 2³ = 1331237590391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1331237590391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 665618795199 + 665618795200.

It is an arithmetic number, because the mean of its divisors is an integer number (665618795200).

Almost surely, 2^{1331237590399} is an apocalyptic number.

1331237590399 is a deficient number, since it is larger than the sum of its proper divisors (1).

1331237590399 is an equidigital number, since it uses as much as digits as its factorization.

1331237590399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4133430, while the sum is 55.

The spelling of 1331237590399 in words is "one trillion, three hundred thirty-one billion, two hundred thirty-seven million, five hundred ninety thousand, three hundred ninety-nine".