24128970809 has 2 divisors, whose sum is σ = 24128970810. Its totient is φ = 24128970808.

The previous prime is 24128970799. The next prime is 24128970881. The reversal of 24128970809 is 90807982142.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23311182400 + 817788409 = 152680^2 + 28597^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-24128970809 is a prime.

It is a super-2 number, since 2×24128970809² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (24128970109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12064485404 + 12064485405.

It is an arithmetic number, because the mean of its divisors is an integer number (12064485405).

Almost surely, 2^24128970809 is an apocalyptic number.

It is an amenable number.

24128970809 is a deficient number, since it is larger than the sum of its proper divisors (1).

24128970809 is an equidigital number, since it uses as much as digits as its factorization.

24128970809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 580608, while the sum is 50.

The spelling of 24128970809 in words is "twenty-four billion, one hundred twenty-eight million, nine hundred seventy thousand, eight hundred nine".