23981069689 has 4 divisors (see below), whose sum is σ = 24433542756. Its totient is φ = 23528596624.

The previous prime is 23981069687. The next prime is 23981069711. The reversal of 23981069689 is 98696018932.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14275470400 + 9705599289 = 119480^2 + 98517^2 .

It is a cyclic number.

It is not a de Polignac number, because 23981069689 - 2¹ = 23981069687 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23981069687) 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 3 ways as a sum of consecutive naturals, for example, 226236454 + ... + 226236559.

It is an arithmetic number, because the mean of its divisors is an integer number (6108385689).

Almost surely, 2^23981069689 is an apocalyptic number.

It is an amenable number.

23981069689 is a deficient number, since it is larger than the sum of its proper divisors (452473067).

23981069689 is an equidigital number, since it uses as much as digits as its factorization.

23981069689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452473066.

The product of its (nonzero) digits is 10077696, while the sum is 61.

The spelling of 23981069689 in words is "twenty-three billion, nine hundred eighty-one million, sixty-nine thousand, six hundred eighty-nine".