243044015297 has 2 divisors, whose sum is σ = 243044015298. Its totient is φ = 243044015296.

The previous prime is 243044015293. The next prime is 243044015303. The reversal of 243044015297 is 792510440342.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 189119744641 + 53924270656 = 434879^2 + 232216^2 .

It is a cyclic number.

It is not a de Polignac number, because 243044015297 - 2² = 243044015293 is a prime.

It is not a weakly prime, because it can be changed into another prime (243044015293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121522007648 + 121522007649.

It is an arithmetic number, because the mean of its divisors is an integer number (121522007649).

Almost surely, 2^243044015297 is an apocalyptic number.

It is an amenable number.

243044015297 is a deficient number, since it is larger than the sum of its proper divisors (1).

243044015297 is an equidigital number, since it uses as much as digits as its factorization.

243044015297 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 241920, while the sum is 41.

The spelling of 243044015297 in words is "two hundred forty-three billion, forty-four million, fifteen thousand, two hundred ninety-seven".