181100300000201 has 4 divisors (see below), whose sum is σ = 181103637140100. Its totient is φ = 181096962860304.

The previous prime is 181100300000141. The next prime is 181100300000203. The reversal of 181100300000201 is 102000003001181.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 74381586274576 + 106718713725625 = 8624476^2 + 10330475^2 .

It is a cyclic number.

It is not a de Polignac number, because 181100300000201 - 2³⁸ = 180825422093257 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 181100300000201.

It is not an unprimeable number, because it can be changed into a prime (181100300000203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1668488546 + ... + 1668597083.

It is an arithmetic number, because the mean of its divisors is an integer number (45275909285025).

Almost surely, 2^{181100300000201} is an apocalyptic number.

It is an amenable number.

181100300000201 is a deficient number, since it is larger than the sum of its proper divisors (3337139899).

181100300000201 is an equidigital number, since it uses as much as digits as its factorization.

181100300000201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3337139898.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 181100300000201 its reverse (102000003001181), we get a palindrome (283100303001382).

The spelling of 181100300000201 in words is "one hundred eighty-one trillion, one hundred billion, three hundred million, two hundred one", and thus it is an aban number.