16662375694837 has 2 divisors, whose sum is σ = 16662375694838. Its totient is φ = 16662375694836.

The previous prime is 16662375694823. The next prime is 16662375694859. The reversal of 16662375694837 is 73849657326661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12284681512401 + 4377694182436 = 3504951^2 + 2092294^2 .

It is a cyclic number.

It is not a de Polignac number, because 16662375694837 - 2⁷ = 16662375694709 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16662375694837.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16662375694807) 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, 8331187847418 + 8331187847419.

It is an arithmetic number, because the mean of its divisors is an integer number (8331187847419).

Almost surely, 2^{16662375694837} is an apocalyptic number.

It is an amenable number.

16662375694837 is a deficient number, since it is larger than the sum of its proper divisors (1).

16662375694837 is an equidigital number, since it uses as much as digits as its factorization.

16662375694837 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1646023680, while the sum is 73.

The spelling of 16662375694837 in words is "sixteen trillion, six hundred sixty-two billion, three hundred seventy-five million, six hundred ninety-four thousand, eight hundred thirty-seven".