66450004554211 has 2 divisors, whose sum is σ = 66450004554212. Its totient is φ = 66450004554210.

The previous prime is 66450004554209. The next prime is 66450004554293. The reversal of 66450004554211 is 11245540005466.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66450004554211 - 2¹ = 66450004554209 is a prime.

Together with 66450004554209, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (66450004584211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33225002277105 + 33225002277106.

It is an arithmetic number, because the mean of its divisors is an integer number (33225002277106).

Almost surely, 2^{66450004554211} is an apocalyptic number.

66450004554211 is a deficient number, since it is larger than the sum of its proper divisors (1).

66450004554211 is an equidigital number, since it uses as much as digits as its factorization.

66450004554211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576000, while the sum is 43.

Adding to 66450004554211 its reverse (11245540005466), we get a palindrome (77695544559677).

The spelling of 66450004554211 in words is "sixty-six trillion, four hundred fifty billion, four million, five hundred fifty-four thousand, two hundred eleven".