6603065811997 has 2 divisors, whose sum is σ = 6603065811998. Its totient is φ = 6603065811996.

The previous prime is 6603065811943. The next prime is 6603065812009. The reversal of 6603065811997 is 7991185603066.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5289213429241 + 1313852382756 = 2299829^2 + 1146234^2 .

It is a cyclic number.

It is not a de Polignac number, because 6603065811997 - 2³¹ = 6600918328349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6603065511997) 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, 3301532905998 + 3301532905999.

It is an arithmetic number, because the mean of its divisors is an integer number (3301532905999).

Almost surely, 2^{6603065811997} is an apocalyptic number.

It is an amenable number.

6603065811997 is a deficient number, since it is larger than the sum of its proper divisors (1).

6603065811997 is an equidigital number, since it uses as much as digits as its factorization.

6603065811997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14696640, while the sum is 61.

The spelling of 6603065811997 in words is "six trillion, six hundred three billion, sixty-five million, eight hundred eleven thousand, nine hundred ninety-seven".