23534664889 has 4 divisors (see below), whose sum is σ = 23536283940. Its totient is φ = 23533045840.

The previous prime is 23534664883. The next prime is 23534664941. The reversal of 23534664889 is 98846643532.

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 12169399225 + 11365265664 = 110315^2 + 106608^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23534664889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23534664883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 787522 + ... + 816859.

It is an arithmetic number, because the mean of its divisors is an integer number (5884070985).

Almost surely, 2^23534664889 is an apocalyptic number.

It is an amenable number.

23534664889 is a deficient number, since it is larger than the sum of its proper divisors (1619051).

23534664889 is a wasteful number, since it uses less digits than its factorization.

23534664889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1619050.

The product of its digits is 29859840, while the sum is 58.

The spelling of 23534664889 in words is "twenty-three billion, five hundred thirty-four million, six hundred sixty-four thousand, eight hundred eighty-nine".