240252060241981 has 2 divisors, whose sum is σ = 240252060241982. Its totient is φ = 240252060241980.

The previous prime is 240252060241913. The next prime is 240252060242039. The reversal of 240252060241981 is 189142060252042.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 145473365602756 + 94778694639225 = 12061234^2 + 9735435^2 .

It is a cyclic number.

It is not a de Polignac number, because 240252060241981 - 2⁹ = 240252060241469 is a prime.

It is a super-2 number, since 2×240252060241981² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (240252060241381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120126030120990 + 120126030120991.

It is an arithmetic number, because the mean of its divisors is an integer number (120126030120991).

Almost surely, 2^{240252060241981} is an apocalyptic number.

It is an amenable number.

240252060241981 is a deficient number, since it is larger than the sum of its proper divisors (1).

240252060241981 is an equidigital number, since it uses as much as digits as its factorization.

240252060241981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 552960, while the sum is 46.

The spelling of 240252060241981 in words is "two hundred forty trillion, two hundred fifty-two billion, sixty million, two hundred forty-one thousand, nine hundred eighty-one".