241729638189661 has 2 divisors, whose sum is σ = 241729638189662. Its totient is φ = 241729638189660.

The previous prime is 241729638189587. The next prime is 241729638189671. The reversal of 241729638189661 is 166981836927142.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 216727538145561 + 25002100044100 = 14721669^2 + 5000210^2 .

It is a cyclic number.

It is not a de Polignac number, because 241729638189661 - 2²⁵ = 241729604635229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (241729638189671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120864819094830 + 120864819094831.

It is an arithmetic number, because the mean of its divisors is an integer number (120864819094831).

Almost surely, 2^{241729638189661} is an apocalyptic number.

It is an amenable number.

241729638189661 is a deficient number, since it is larger than the sum of its proper divisors (1).

241729638189661 is an equidigital number, since it uses as much as digits as its factorization.

241729638189661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 376233984, while the sum is 73.

The spelling of 241729638189661 in words is "two hundred forty-one trillion, seven hundred twenty-nine billion, six hundred thirty-eight million, one hundred eighty-nine thousand, six hundred sixty-one".