66232873193 has 2 divisors, whose sum is σ = 66232873194. Its totient is φ = 66232873192.

The previous prime is 66232873159. The next prime is 66232873219. The reversal of 66232873193 is 39137823266.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43192061929 + 23040811264 = 207827^2 + 151792^2 .

It is a cyclic number.

It is not a de Polignac number, because 66232873193 - 2¹² = 66232869097 is a prime.

It is not a weakly prime, because it can be changed into another prime (66232873153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33116436596 + 33116436597.

It is an arithmetic number, because the mean of its divisors is an integer number (33116436597).

Almost surely, 2^66232873193 is an apocalyptic number.

It is an amenable number.

66232873193 is a deficient number, since it is larger than the sum of its proper divisors (1).

66232873193 is an equidigital number, since it uses as much as digits as its factorization.

66232873193 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1959552, while the sum is 50.

The spelling of 66232873193 in words is "sixty-six billion, two hundred thirty-two million, eight hundred seventy-three thousand, one hundred ninety-three".