201044432161 has 2 divisors, whose sum is σ = 201044432162. Its totient is φ = 201044432160.

The previous prime is 201044432131. The next prime is 201044432201. The reversal of 201044432161 is 161234440102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 196763216400 + 4281215761 = 443580^2 + 65431^2 .

It is a cyclic number.

It is not a de Polignac number, because 201044432161 - 2⁵ = 201044432129 is a prime.

It is a super-2 number, since 2×201044432161² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (201044432111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100522216080 + 100522216081.

It is an arithmetic number, because the mean of its divisors is an integer number (100522216081).

Almost surely, 2^201044432161 is an apocalyptic number.

It is an amenable number.

201044432161 is a deficient number, since it is larger than the sum of its proper divisors (1).

201044432161 is an equidigital number, since it uses as much as digits as its factorization.

201044432161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 201044432161 its reverse (161234440102), we get a palindrome (362278872263).

The spelling of 201044432161 in words is "two hundred one billion, forty-four million, four hundred thirty-two thousand, one hundred sixty-one".