23666856229 has 2 divisors, whose sum is σ = 23666856230. Its totient is φ = 23666856228.

The previous prime is 23666856223. The next prime is 23666856307. The reversal of 23666856229 is 92265866632.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20878805025 + 2788051204 = 144495^2 + 52802^2 .

It is a cyclic number.

It is not a de Polignac number, because 23666856229 - 2²⁹ = 23129985317 is a prime.

It is a super-2 number, since 2×23666856229² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 23666856229.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23666856223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11833428114 + 11833428115.

It is an arithmetic number, because the mean of its divisors is an integer number (11833428115).

Almost surely, 2^23666856229 is an apocalyptic number.

It is an amenable number.

23666856229 is a deficient number, since it is larger than the sum of its proper divisors (1).

23666856229 is an equidigital number, since it uses as much as digits as its factorization.

23666856229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11197440, while the sum is 55.

The spelling of 23666856229 in words is "twenty-three billion, six hundred sixty-six million, eight hundred fifty-six thousand, two hundred twenty-nine".