23181389088 has 144 divisors (see below), whose sum is σ = 72031514688. Its totient is φ = 6484262400.

The previous prime is 23181389087. The next prime is 23181389107. The reversal of 23181389088 is 88098318132.

It is a self number, because there is not a number n which added to its sum of digits gives 23181389088.

It is not an unprimeable number, because it can be changed into a prime (23181389087) 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 23 ways as a sum of consecutive naturals, for example, 74253 + ... + 227763.

It is an arithmetic number, because the mean of its divisors is an integer number (500218852).

Almost surely, 2^23181389088 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23181389088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36015757344).

23181389088 is an abundant number, since it is smaller than the sum of its proper divisors (48850125600).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23181389088 is a wasteful number, since it uses less digits than its factorization.

23181389088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153559 (or 153540 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 51.

The spelling of 23181389088 in words is "twenty-three billion, one hundred eighty-one million, three hundred eighty-nine thousand, eighty-eight".