73266784189 has 2 divisors, whose sum is σ = 73266784190. Its totient is φ = 73266784188.

The previous prime is 73266784183. The next prime is 73266784219. The reversal of 73266784189 is 98148766237.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50955387289 + 22311396900 = 225733^2 + 149370^2 .

It is a cyclic number.

It is not a de Polignac number, because 73266784189 - 2²¹ = 73264687037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73266784183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36633392094 + 36633392095.

It is an arithmetic number, because the mean of its divisors is an integer number (36633392095).

Almost surely, 2^73266784189 is an apocalyptic number.

It is an amenable number.

73266784189 is a deficient number, since it is larger than the sum of its proper divisors (1).

73266784189 is an equidigital number, since it uses as much as digits as its factorization.

73266784189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24385536, while the sum is 61.

The spelling of 73266784189 in words is "seventy-three billion, two hundred sixty-six million, seven hundred eighty-four thousand, one hundred eighty-nine".