23660061021 has 12 divisors (see below), whose sum is σ = 34347383200. Its totient is φ = 15694109640.

The previous prime is 23660060993. The next prime is 23660061053. The reversal of 23660061021 is 12016006632.

23660061021 is a `hidden beast` number, since 2 + 36 + 600 + 6 + 1 + 0 + 21 = 666.

It is not a de Polignac number, because 23660061021 - 2²⁶ = 23592952157 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 (23660061071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6603475 + ... + 6607056.

Almost surely, 2^23660061021 is an apocalyptic number.

It is an amenable number.

23660061021 is a deficient number, since it is larger than the sum of its proper divisors (10687322179).

23660061021 is a wasteful number, since it uses less digits than its factorization.

23660061021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13210736 (or 13210733 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

Adding to 23660061021 its reverse (12016006632), we get a palindrome (35676067653).

The spelling of 23660061021 in words is "twenty-three billion, six hundred sixty million, sixty-one thousand, twenty-one".