23666367641 has 32 divisors (see below), whose sum is σ = 29065817088. Its totient is φ = 18807828480.

The previous prime is 23666367631. The next prime is 23666367671. The reversal of 23666367641 is 14676366632.

It is a de Polignac number, because none of the positive numbers 2^k-23666367641 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23666367641.

It is not an unprimeable number, because it can be changed into a prime (23666367631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13750661 + ... + 13752381.

It is an arithmetic number, because the mean of its divisors is an integer number (908306784).

Almost surely, 2^23666367641 is an apocalyptic number.

It is an amenable number.

23666367641 is a deficient number, since it is larger than the sum of its proper divisors (5399449447).

23666367641 is a wasteful number, since it uses less digits than its factorization.

23666367641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3401.

The product of its digits is 3919104, while the sum is 50.

The spelling of 23666367641 in words is "twenty-three billion, six hundred sixty-six million, three hundred sixty-seven thousand, six hundred forty-one".