201044442857 has 2 divisors, whose sum is σ = 201044442858. Its totient is φ = 201044442856.

The previous prime is 201044442847. The next prime is 201044443049. The reversal of 201044442857 is 758244440102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 122709389401 + 78335053456 = 350299^2 + 279884^2 .

It is a cyclic number.

It is not a de Polignac number, because 201044442857 - 2⁸ = 201044442601 is a prime.

It is not a weakly prime, because it can be changed into another prime (201044442847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100522221428 + 100522221429.

It is an arithmetic number, because the mean of its divisors is an integer number (100522221429).

Almost surely, 2^201044442857 is an apocalyptic number.

It is an amenable number.

201044442857 is a deficient number, since it is larger than the sum of its proper divisors (1).

201044442857 is an equidigital number, since it uses as much as digits as its factorization.

201044442857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 286720, while the sum is 41.

Adding to 201044442857 its reverse (758244440102), we get a palindrome (959288882959).

The spelling of 201044442857 in words is "two hundred one billion, forty-four million, four hundred forty-two thousand, eight hundred fifty-seven".