243669240601 has 2 divisors, whose sum is σ = 243669240602. Its totient is φ = 243669240600.

The previous prime is 243669240557. The next prime is 243669240623. The reversal of 243669240601 is 106042966342.

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., 239703264025 + 3965976576 = 489595^2 + 62976^2 .

It is a cyclic number.

It is not a de Polignac number, because 243669240601 - 2¹⁷ = 243669109529 is a prime.

It is not a weakly prime, because it can be changed into another prime (243669240641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121834620300 + 121834620301.

It is an arithmetic number, because the mean of its divisors is an integer number (121834620301).

Almost surely, 2^243669240601 is an apocalyptic number.

It is an amenable number.

243669240601 is a deficient number, since it is larger than the sum of its proper divisors (1).

243669240601 is an equidigital number, since it uses as much as digits as its factorization.

243669240601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 373248, while the sum is 43.

The spelling of 243669240601 in words is "two hundred forty-three billion, six hundred sixty-nine million, two hundred forty thousand, six hundred one".