66386733768323 has 2 divisors, whose sum is σ = 66386733768324. Its totient is φ = 66386733768322.

The previous prime is 66386733768317. The next prime is 66386733768331. The reversal of 66386733768323 is 32386733768366.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66386733768323 - 2¹⁸ = 66386733506179 is a prime.

It is not a weakly prime, because it can be changed into another prime (66386733768373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33193366884161 + 33193366884162.

It is an arithmetic number, because the mean of its divisors is an integer number (33193366884162).

Almost surely, 2^{66386733768323} is an apocalyptic number.

66386733768323 is a deficient number, since it is larger than the sum of its proper divisors (1).

66386733768323 is an equidigital number, since it uses as much as digits as its factorization.

66386733768323 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1975228416, while the sum is 71.

The spelling of 66386733768323 in words is "sixty-six trillion, three hundred eighty-six billion, seven hundred thirty-three million, seven hundred sixty-eight thousand, three hundred twenty-three".