23039142809 has 2 divisors, whose sum is σ = 23039142810. Its totient is φ = 23039142808.

The previous prime is 23039142779. The next prime is 23039142827. The reversal of 23039142809 is 90824193032.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18761328784 + 4277814025 = 136972^2 + 65405^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23039142809 is a prime.

It is not a weakly prime, because it can be changed into another prime (23039142859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11519571404 + 11519571405.

It is an arithmetic number, because the mean of its divisors is an integer number (11519571405).

Almost surely, 2^23039142809 is an apocalyptic number.

It is an amenable number.

23039142809 is a deficient number, since it is larger than the sum of its proper divisors (1).

23039142809 is an equidigital number, since it uses as much as digits as its factorization.

23039142809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 93312, while the sum is 41.

The spelling of 23039142809 in words is "twenty-three billion, thirty-nine million, one hundred forty-two thousand, eight hundred nine".