24243986849 has 2 divisors, whose sum is σ = 24243986850. Its totient is φ = 24243986848.

The previous prime is 24243986797. The next prime is 24243986867. The reversal of 24243986849 is 94868934242.

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., 22882007824 + 1361979025 = 151268^2 + 36905^2 .

It is a cyclic number.

It is not a de Polignac number, because 24243986849 - 2²⁸ = 23975551393 is a prime.

It is not a weakly prime, because it can be changed into another prime (24243988849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12121993424 + 12121993425.

It is an arithmetic number, because the mean of its divisors is an integer number (12121993425).

Almost surely, 2^24243986849 is an apocalyptic number.

It is an amenable number.

24243986849 is a deficient number, since it is larger than the sum of its proper divisors (1).

24243986849 is an equidigital number, since it uses as much as digits as its factorization.

24243986849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23887872, while the sum is 59.

The spelling of 24243986849 in words is "twenty-four billion, two hundred forty-three million, nine hundred eighty-six thousand, eight hundred forty-nine".