201044444197 has 2 divisors, whose sum is σ = 201044444198. Its totient is φ = 201044444196.

The previous prime is 201044444191. The next prime is 201044444231. The reversal of 201044444197 is 791444440102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 135658885761 + 65385558436 = 368319^2 + 255706^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201044444197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201044444191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100522222098 + 100522222099.

It is an arithmetic number, because the mean of its divisors is an integer number (100522222099).

Almost surely, 2^201044444197 is an apocalyptic number.

It is an amenable number.

201044444197 is a deficient number, since it is larger than the sum of its proper divisors (1).

201044444197 is an equidigital number, since it uses as much as digits as its factorization.

201044444197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 129024, while the sum is 40.

Adding to 201044444197 its reverse (791444440102), we get a palindrome (992488884299).

The spelling of 201044444197 in words is "two hundred one billion, forty-four million, four hundred forty-four thousand, one hundred ninety-seven".