66207083399 has 2 divisors, whose sum is σ = 66207083400. Its totient is φ = 66207083398.

The previous prime is 66207083249. The next prime is 66207083401. The reversal of 66207083399 is 99338070266.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66207083399 is a prime.

Together with 66207083401, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66207083399.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66207083599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33103541699 + 33103541700.

It is an arithmetic number, because the mean of its divisors is an integer number (33103541700).

Almost surely, 2^66207083399 is an apocalyptic number.

66207083399 is a deficient number, since it is larger than the sum of its proper divisors (1).

66207083399 is an equidigital number, since it uses as much as digits as its factorization.

66207083399 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2939328, while the sum is 53.

The spelling of 66207083399 in words is "sixty-six billion, two hundred seven million, eighty-three thousand, three hundred ninety-nine".