209422607734073 has 2 divisors, whose sum is σ = 209422607734074. Its totient is φ = 209422607734072.

The previous prime is 209422607734019. The next prime is 209422607734141. The reversal of 209422607734073 is 370437706224902.

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., 206747933927824 + 2674673806249 = 14378732^2 + 1635443^2 .

It is a cyclic number.

It is not a de Polignac number, because 209422607734073 - 2¹² = 209422607729977 is a prime.

It is not a weakly prime, because it can be changed into another prime (209422607737073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104711303867036 + 104711303867037.

It is an arithmetic number, because the mean of its divisors is an integer number (104711303867037).

Almost surely, 2^{209422607734073} is an apocalyptic number.

It is an amenable number.

209422607734073 is a deficient number, since it is larger than the sum of its proper divisors (1).

209422607734073 is an equidigital number, since it uses as much as digits as its factorization.

209422607734073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21337344, while the sum is 56.

The spelling of 209422607734073 in words is "two hundred nine trillion, four hundred twenty-two billion, six hundred seven million, seven hundred thirty-four thousand, seventy-three".