66031189431733 has 2 divisors, whose sum is σ = 66031189431734. Its totient is φ = 66031189431732.

The previous prime is 66031189431707. The next prime is 66031189431859. The reversal of 66031189431733 is 33713498113066.

66031189431733 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 can be written as a sum of positive squares in only one way, i.e., 63181227590244 + 2849961841489 = 7948662^2 + 1688183^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66031189431733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66031189431433) 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, 33015594715866 + 33015594715867.

It is an arithmetic number, because the mean of its divisors is an integer number (33015594715867).

Almost surely, 2^{66031189431733} is an apocalyptic number.

It is an amenable number.

66031189431733 is a deficient number, since it is larger than the sum of its proper divisors (1).

66031189431733 is an equidigital number, since it uses as much as digits as its factorization.

66031189431733 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5878656, while the sum is 55.

The spelling of 66031189431733 in words is "sixty-six trillion, thirty-one billion, one hundred eighty-nine million, four hundred thirty-one thousand, seven hundred thirty-three".