13166437137533 has 2 divisors, whose sum is σ = 13166437137534. Its totient is φ = 13166437137532.

The previous prime is 13166437137479. The next prime is 13166437137571. The reversal of 13166437137533 is 33573173466131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8713991090809 + 4452446046724 = 2951947^2 + 2110082^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13166437137533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13166437137433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6583218568766 + 6583218568767.

It is an arithmetic number, because the mean of its divisors is an integer number (6583218568767).

Almost surely, 2^{13166437137533} is an apocalyptic number.

It is an amenable number.

13166437137533 is a deficient number, since it is larger than the sum of its proper divisors (1).

13166437137533 is an equidigital number, since it uses as much as digits as its factorization.

13166437137533 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8573040, while the sum is 53.

The spelling of 13166437137533 in words is "thirteen trillion, one hundred sixty-six billion, four hundred thirty-seven million, one hundred thirty-seven thousand, five hundred thirty-three".