23666878089 has 48 divisors (see below), whose sum is σ = 35386775424. Its totient is φ = 15232492800.

The previous prime is 23666878063. The next prime is 23666878121. The reversal of 23666878089 is 98087866632.

It is not a de Polignac number, because 23666878089 - 2⁷ = 23666877961 is a prime.

It is a super-2 number, since 2×23666878089² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (23666878009) 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 47 ways as a sum of consecutive naturals, for example, 15337452 + ... + 15338994.

It is an arithmetic number, because the mean of its divisors is an integer number (737224488).

Almost surely, 2^23666878089 is an apocalyptic number.

It is an amenable number.

23666878089 is a deficient number, since it is larger than the sum of its proper divisors (11719897335).

23666878089 is a wasteful number, since it uses less digits than its factorization.

23666878089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1998 (or 1995 counting only the distinct ones).

The product of its (nonzero) digits is 41803776, while the sum is 63.

The spelling of 23666878089 in words is "twenty-three billion, six hundred sixty-six million, eight hundred seventy-eight thousand, eighty-nine".