66002169899 has 2 divisors, whose sum is σ = 66002169900. Its totient is φ = 66002169898.

The previous prime is 66002169881. The next prime is 66002169953. The reversal of 66002169899 is 99896120066.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66002169899 is a prime.

It is not a weakly prime, because it can be changed into another prime (66002169829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33001084949 + 33001084950.

It is an arithmetic number, because the mean of its divisors is an integer number (33001084950).

Almost surely, 2^66002169899 is an apocalyptic number.

66002169899 is a deficient number, since it is larger than the sum of its proper divisors (1).

66002169899 is an equidigital number, since it uses as much as digits as its factorization.

66002169899 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2519424, while the sum is 56.

The spelling of 66002169899 in words is "sixty-six billion, two million, one hundred sixty-nine thousand, eight hundred ninety-nine".