209466926629 has 2 divisors, whose sum is σ = 209466926630. Its totient is φ = 209466926628.

The previous prime is 209466926611. The next prime is 209466926681. The reversal of 209466926629 is 926629664902.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 204418824129 + 5048102500 = 452127^2 + 71050^2 .

It is a cyclic number.

It is not a de Polignac number, because 209466926629 - 2³³ = 200876992037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (209466926689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104733463314 + 104733463315.

It is an arithmetic number, because the mean of its divisors is an integer number (104733463315).

Almost surely, 2^209466926629 is an apocalyptic number.

It is an amenable number.

209466926629 is a deficient number, since it is larger than the sum of its proper divisors (1).

209466926629 is an equidigital number, since it uses as much as digits as its factorization.

209466926629 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30233088, while the sum is 61.

The spelling of 209466926629 in words is "two hundred nine billion, four hundred sixty-six million, nine hundred twenty-six thousand, six hundred twenty-nine".