6610665111539 has 2 divisors, whose sum is σ = 6610665111540. Its totient is φ = 6610665111538.

The previous prime is 6610665111487. The next prime is 6610665111551. The reversal of 6610665111539 is 9351115660166.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6610665111539 - 2¹⁶ = 6610665046003 is a prime.

It is not a weakly prime, because it can be changed into another prime (6610665111559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3305332555769 + 3305332555770.

It is an arithmetic number, because the mean of its divisors is an integer number (3305332555770).

Almost surely, 2^{6610665111539} is an apocalyptic number.

6610665111539 is a deficient number, since it is larger than the sum of its proper divisors (1).

6610665111539 is an equidigital number, since it uses as much as digits as its factorization.

6610665111539 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 874800, while the sum is 50.

The spelling of 6610665111539 in words is "six trillion, six hundred ten billion, six hundred sixty-five million, one hundred eleven thousand, five hundred thirty-nine".