23506666687 has 8 divisors (see below), whose sum is σ = 27102504096. Its totient is φ = 19970264832.

The previous prime is 23506666669. The next prime is 23506666727. The reversal of 23506666687 is 78666660532.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 23506666687 - 2¹⁵ = 23506633919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23506666627) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14858038 + ... + 14859619.

It is an arithmetic number, because the mean of its divisors is an integer number (3387813012).

Almost surely, 2^23506666687 is an apocalyptic number.

23506666687 is a deficient number, since it is larger than the sum of its proper divisors (3595837409).

23506666687 is a wasteful number, since it uses less digits than its factorization.

23506666687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29717777.

The product of its (nonzero) digits is 13063680, while the sum is 55.

The spelling of 23506666687 in words is "twenty-three billion, five hundred six million, six hundred sixty-six thousand, six hundred eighty-seven".