66732273799 has 2 divisors, whose sum is σ = 66732273800. Its totient is φ = 66732273798.

The previous prime is 66732273791. The next prime is 66732273847. The reversal of 66732273799 is 99737223766.

66732273799 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66732273799 - 2³ = 66732273791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66732273791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33366136899 + 33366136900.

It is an arithmetic number, because the mean of its divisors is an integer number (33366136900).

Almost surely, 2^66732273799 is an apocalyptic number.

66732273799 is a deficient number, since it is larger than the sum of its proper divisors (1).

66732273799 is an equidigital number, since it uses as much as digits as its factorization.

66732273799 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36006768, while the sum is 61.

The spelling of 66732273799 in words is "sixty-six billion, seven hundred thirty-two million, two hundred seventy-three thousand, seven hundred ninety-nine".