23173673849 has 2 divisors, whose sum is σ = 23173673850. Its totient is φ = 23173673848.

The previous prime is 23173673819. The next prime is 23173673869. The reversal of 23173673849 is 94837637132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17141355625 + 6032318224 = 130925^2 + 77668^2 .

It is a cyclic number.

It is not a de Polignac number, because 23173673849 - 2²⁸ = 22905238393 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 23173673849.

It is not a weakly prime, because it can be changed into another prime (23173673819) 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, 11586836924 + 11586836925.

It is an arithmetic number, because the mean of its divisors is an integer number (11586836925).

Almost surely, 2^23173673849 is an apocalyptic number.

It is an amenable number.

23173673849 is a deficient number, since it is larger than the sum of its proper divisors (1).

23173673849 is an equidigital number, since it uses as much as digits as its factorization.

23173673849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4572288, while the sum is 53.

The spelling of 23173673849 in words is "twenty-three billion, one hundred seventy-three million, six hundred seventy-three thousand, eight hundred forty-nine".