201622361065 has 16 divisors (see below), whose sum is σ = 242505079056. Its totient is φ = 160926105600.

The previous prime is 201622361063. The next prime is 201622361071. The reversal of 201622361065 is 560163226102.

It can be written as a sum of positive squares in 8 ways, for example, as 16143989481 + 185478371584 = 127059^2 + 430672^2 .

It is not a de Polignac number, because 201622361065 - 2¹ = 201622361063 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 201622361065.

It is not an unprimeable number, because it can be changed into a prime (201622361063) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4403329 + ... + 4448881.

It is an arithmetic number, because the mean of its divisors is an integer number (15156567441).

Almost surely, 2^201622361065 is an apocalyptic number.

It is an amenable number.

201622361065 is a deficient number, since it is larger than the sum of its proper divisors (40882717991).

201622361065 is a wasteful number, since it uses less digits than its factorization.

201622361065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47580.

The product of its (nonzero) digits is 25920, while the sum is 34.

Adding to 201622361065 its reverse (560163226102), we get a palindrome (761785587167).

The spelling of 201622361065 in words is "two hundred one billion, six hundred twenty-two million, three hundred sixty-one thousand, sixty-five".