201044319689 has 2 divisors, whose sum is σ = 201044319690. Its totient is φ = 201044319688.

The previous prime is 201044319683. The next prime is 201044319733. The reversal of 201044319689 is 986913440102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 141451210000 + 59593109689 = 376100^2 + 244117^2 .

It is a cyclic number.

It is not a de Polignac number, because 201044319689 - 2⁸ = 201044319433 is a prime.

It is not a weakly prime, because it can be changed into another prime (201044319683) 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, 100522159844 + 100522159845.

It is an arithmetic number, because the mean of its divisors is an integer number (100522159845).

Almost surely, 2^201044319689 is an apocalyptic number.

It is an amenable number.

201044319689 is a deficient number, since it is larger than the sum of its proper divisors (1).

201044319689 is an equidigital number, since it uses as much as digits as its factorization.

201044319689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 373248, while the sum is 47.

The spelling of 201044319689 in words is "two hundred one billion, forty-four million, three hundred nineteen thousand, six hundred eighty-nine".