23532566129 has 2 divisors, whose sum is σ = 23532566130. Its totient is φ = 23532566128.

The previous prime is 23532566089. The next prime is 23532566131. The reversal of 23532566129 is 92166523532.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15881040400 + 7651525729 = 126020^2 + 87473^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23532566129 is a prime.

It is a Sophie Germain prime.

Together with 23532566131, it forms a pair of twin primes.

It is a Chen 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 23532566129.

It is not a weakly prime, because it can be changed into another prime (23532566429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11766283064 + 11766283065.

It is an arithmetic number, because the mean of its divisors is an integer number (11766283065).

Almost surely, 2^23532566129 is an apocalyptic number.

It is an amenable number.

23532566129 is a deficient number, since it is larger than the sum of its proper divisors (1).

23532566129 is an equidigital number, since it uses as much as digits as its factorization.

23532566129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 583200, while the sum is 44.

The spelling of 23532566129 in words is "twenty-three billion, five hundred thirty-two million, five hundred sixty-six thousand, one hundred twenty-nine".