23042809672989 has 4 divisors (see below), whose sum is σ = 30723746230656. Its totient is φ = 15361873115324.

The previous prime is 23042809672931. The next prime is 23042809673099. The reversal of 23042809672989 is 98927690824032.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23042809672989 - 2⁸ = 23042809672733 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23042809692989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3840468278829 + ... + 3840468278834.

It is an arithmetic number, because the mean of its divisors is an integer number (7680936557664).

Almost surely, 2^{23042809672989} is an apocalyptic number.

It is an amenable number.

23042809672989 is a deficient number, since it is larger than the sum of its proper divisors (7680936557667).

23042809672989 is an equidigital number, since it uses as much as digits as its factorization.

23042809672989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7680936557666.

The product of its (nonzero) digits is 188116992, while the sum is 69.

The spelling of 23042809672989 in words is "twenty-three trillion, forty-two billion, eight hundred nine million, six hundred seventy-two thousand, nine hundred eighty-nine".