241662257256661 has 2 divisors, whose sum is σ = 241662257256662. Its totient is φ = 241662257256660.

The previous prime is 241662257256611. The next prime is 241662257256683. The reversal of 241662257256661 is 166652752266142.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 212570742997636 + 29091514259025 = 14579806^2 + 5393655^2 .

It is a cyclic number.

It is not a de Polignac number, because 241662257256661 - 2¹⁷ = 241662257125589 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 241662257256661.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (241662257256601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120831128628330 + 120831128628331.

It is an arithmetic number, because the mean of its divisors is an integer number (120831128628331).

Almost surely, 2^{241662257256661} is an apocalyptic number.

It is an amenable number.

241662257256661 is a deficient number, since it is larger than the sum of its proper divisors (1).

241662257256661 is an equidigital number, since it uses as much as digits as its factorization.

241662257256661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 87091200, while the sum is 61.

The spelling of 241662257256661 in words is "two hundred forty-one trillion, six hundred sixty-two billion, two hundred fifty-seven million, two hundred fifty-six thousand, six hundred sixty-one".