23666126129 has 2 divisors, whose sum is σ = 23666126130. Its totient is φ = 23666126128.

The previous prime is 23666126123. The next prime is 23666126167. The reversal of 23666126129 is 92162166632.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23637525025 + 28601104 = 153745^2 + 5348^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23666126129 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23666126129.

It is not a weakly prime, because it can be changed into another prime (23666126123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11833063064 + 11833063065.

It is an arithmetic number, because the mean of its divisors is an integer number (11833063065).

Almost surely, 2^23666126129 is an apocalyptic number.

It is an amenable number.

23666126129 is a deficient number, since it is larger than the sum of its proper divisors (1).

23666126129 is an equidigital number, since it uses as much as digits as its factorization.

23666126129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 279936, while the sum is 44.

The spelling of 23666126129 in words is "twenty-three billion, six hundred sixty-six million, one hundred twenty-six thousand, one hundred twenty-nine".