20243324249 has 2 divisors, whose sum is σ = 20243324250. Its totient is φ = 20243324248.

The previous prime is 20243324173. The next prime is 20243324317. The reversal of 20243324249 is 94242334202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14121044224 + 6122280025 = 118832^2 + 78245^2 .

It is a cyclic number.

It is not a de Polignac number, because 20243324249 - 2²⁰ = 20242275673 is a prime.

It is not a weakly prime, because it can be changed into another prime (20243354249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10121662124 + 10121662125.

It is an arithmetic number, because the mean of its divisors is an integer number (10121662125).

Almost surely, 2^20243324249 is an apocalyptic number.

It is an amenable number.

20243324249 is a deficient number, since it is larger than the sum of its proper divisors (1).

20243324249 is an equidigital number, since it uses as much as digits as its factorization.

20243324249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82944, while the sum is 35.

The spelling of 20243324249 in words is "twenty billion, two hundred forty-three million, three hundred twenty-four thousand, two hundred forty-nine".