243899113822723 has 2 divisors, whose sum is σ = 243899113822724. Its totient is φ = 243899113822722.

The previous prime is 243899113822711. The next prime is 243899113822787. The reversal of 243899113822723 is 327228311998342.

It is an a-pointer prime, because the next prime (243899113822787) can be obtained adding 243899113822723 to its sum of digits (64).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 243899113822723 - 2³³ = 243890523888131 is a prime.

It is a super-2 number, since 2×243899113822723² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (243899119822723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121949556911361 + 121949556911362.

It is an arithmetic number, because the mean of its divisors is an integer number (121949556911362).

Almost surely, 2^{243899113822723} is an apocalyptic number.

243899113822723 is a deficient number, since it is larger than the sum of its proper divisors (1).

243899113822723 is an equidigital number, since it uses as much as digits as its factorization.

243899113822723 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62705664, while the sum is 64.

The spelling of 243899113822723 in words is "two hundred forty-three trillion, eight hundred ninety-nine billion, one hundred thirteen million, eight hundred twenty-two thousand, seven hundred twenty-three".