23641145809 has 2 divisors, whose sum is σ = 23641145810. Its totient is φ = 23641145808.

The previous prime is 23641145783. The next prime is 23641145813. The reversal of 23641145809 is 90854114632.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15487055809 + 8154090000 = 124447^2 + 90300^2 .

It is a cyclic number.

It is not a de Polignac number, because 23641145809 - 2⁵ = 23641145777 is a prime.

It is not a weakly prime, because it can be changed into another prime (23641145839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11820572904 + 11820572905.

It is an arithmetic number, because the mean of its divisors is an integer number (11820572905).

Almost surely, 2^23641145809 is an apocalyptic number.

It is an amenable number.

23641145809 is a deficient number, since it is larger than the sum of its proper divisors (1).

23641145809 is an equidigital number, since it uses as much as digits as its factorization.

23641145809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 207360, while the sum is 43.

The spelling of 23641145809 in words is "twenty-three billion, six hundred forty-one million, one hundred forty-five thousand, eight hundred nine".