24090243509 has 2 divisors, whose sum is σ = 24090243510. Its totient is φ = 24090243508.

The previous prime is 24090243481. The next prime is 24090243517. The reversal of 24090243509 is 90534209042.

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., 21934498609 + 2155744900 = 148103^2 + 46430^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-24090243509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (24090213509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12045121754 + 12045121755.

It is an arithmetic number, because the mean of its divisors is an integer number (12045121755).

Almost surely, 2^24090243509 is an apocalyptic number.

It is an amenable number.

24090243509 is a deficient number, since it is larger than the sum of its proper divisors (1).

24090243509 is an equidigital number, since it uses as much as digits as its factorization.

24090243509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 77760, while the sum is 38.

The spelling of 24090243509 in words is "twenty-four billion, ninety million, two hundred forty-three thousand, five hundred nine".