202440204181 has 2 divisors, whose sum is σ = 202440204182. Its totient is φ = 202440204180.

The previous prime is 202440204167. The next prime is 202440204217. The reversal of 202440204181 is 181402044202.

202440204181 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 103577123556 + 98863080625 = 321834^2 + 314425^2 .

It is a cyclic number.

It is not a de Polignac number, because 202440204181 - 2⁵ = 202440204149 is a prime.

It is a super-2 number, since 2×202440204181² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202440204121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101220102090 + 101220102091.

It is an arithmetic number, because the mean of its divisors is an integer number (101220102091).

Almost surely, 2^202440204181 is an apocalyptic number.

It is an amenable number.

202440204181 is a deficient number, since it is larger than the sum of its proper divisors (1).

202440204181 is an equidigital number, since it uses as much as digits as its factorization.

202440204181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4096, while the sum is 28.

Adding to 202440204181 its reverse (181402044202), we get a palindrome (383842248383).

The spelling of 202440204181 in words is "two hundred two billion, four hundred forty million, two hundred four thousand, one hundred eighty-one".