66300215135201 has 2 divisors, whose sum is σ = 66300215135202. Its totient is φ = 66300215135200.

The previous prime is 66300215135113. The next prime is 66300215135207. The reversal of 66300215135201 is 10253151200366.

66300215135201 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61274077106176 + 5026138029025 = 7827776^2 + 2241905^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66300215135201 is a prime.

It is not a weakly prime, because it can be changed into another prime (66300215135207) 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, 33150107567600 + 33150107567601.

It is an arithmetic number, because the mean of its divisors is an integer number (33150107567601).

Almost surely, 2^{66300215135201} is an apocalyptic number.

It is an amenable number.

66300215135201 is a deficient number, since it is larger than the sum of its proper divisors (1).

66300215135201 is an equidigital number, since it uses as much as digits as its factorization.

66300215135201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32400, while the sum is 35.

Adding to 66300215135201 its reverse (10253151200366), we get a palindrome (76553366335567).

The spelling of 66300215135201 in words is "sixty-six trillion, three hundred billion, two hundred fifteen million, one hundred thirty-five thousand, two hundred one".