4244042145181 has 2 divisors, whose sum is σ = 4244042145182. Its totient is φ = 4244042145180.

The previous prime is 4244042145179. The next prime is 4244042145227. The reversal of 4244042145181 is 1815412404424.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2737813673956 + 1506228471225 = 1654634^2 + 1227285^2 .

It is a cyclic number.

It is not a de Polignac number, because 4244042145181 - 2¹ = 4244042145179 is a prime.

It is a super-2 number, since 2×4244042145181² (a number of 26 digits) contains 22 as substring.

Together with 4244042145179, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4244042145481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2122021072590 + 2122021072591.

It is an arithmetic number, because the mean of its divisors is an integer number (2122021072591).

Almost surely, 2^{4244042145181} is an apocalyptic number.

It is an amenable number.

4244042145181 is a deficient number, since it is larger than the sum of its proper divisors (1).

4244042145181 is an equidigital number, since it uses as much as digits as its factorization.

4244042145181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 163840, while the sum is 40.

The spelling of 4244042145181 in words is "four trillion, two hundred forty-four billion, forty-two million, one hundred forty-five thousand, one hundred eighty-one".