243441100061 has 2 divisors, whose sum is σ = 243441100062. Its totient is φ = 243441100060.

The previous prime is 243441100027. The next prime is 243441100073. The reversal of 243441100061 is 160001144342.

It is a happy number.

243441100061 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 202639524025 + 40801576036 = 450155^2 + 201994^2 .

It is a cyclic number.

It is not a de Polignac number, because 243441100061 - 2³⁰ = 242367358237 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 243441100061.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243441102061) 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, 121720550030 + 121720550031.

It is an arithmetic number, because the mean of its divisors is an integer number (121720550031).

Almost surely, 2^243441100061 is an apocalyptic number.

It is an amenable number.

243441100061 is a deficient number, since it is larger than the sum of its proper divisors (1).

243441100061 is an equidigital number, since it uses as much as digits as its factorization.

243441100061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 26.

The spelling of 243441100061 in words is "two hundred forty-three billion, four hundred forty-one million, one hundred thousand, sixty-one".