23666666679 has 12 divisors (see below), whose sum is σ = 34194842136. Its totient is φ = 15773320752.

The previous prime is 23666666657. The next prime is 23666666687. The reversal of 23666666679 is 97666666632.

It is not a de Polignac number, because 23666666679 - 2¹³ = 23666658487 is a prime.

It is a super-2 number, since 2×23666666679² (a number of 22 digits) contains 22 as substring.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23666616679) 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 in 11 ways as a sum of consecutive naturals, for example, 337629 + ... + 401654.

It is an arithmetic number, because the mean of its divisors is an integer number (2849570178).

Almost surely, 2^23666666679 is an apocalyptic number.

23666666679 is a deficient number, since it is larger than the sum of its proper divisors (10528175457).

23666666679 is a wasteful number, since it uses less digits than its factorization.

23666666679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 742846 (or 742843 counting only the distinct ones).

The product of its digits is 105815808, while the sum is 63.

The spelling of 23666666679 in words is "twenty-three billion, six hundred sixty-six million, six hundred sixty-six thousand, six hundred seventy-nine".