23235586128 has 420 divisors, whose sum is σ = 73521908508. Its totient is φ = 7106641920.

The previous prime is 23235586123. The next prime is 23235586151. The reversal of 23235586128 is 82168553232.

23235586128 is a `hidden beast` number, since 2 + 3 + 23 + 5 + 5 + 8 + 612 + 8 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 2478844944 + 20756741184 = 49788^2 + 144072^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23235586123) by changing a digit.

It is a polite number, since it can be written in 83 ways as a sum of consecutive naturals, for example, 205624600 + ... + 205624712.

Almost surely, 2^23235586128 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 23235586128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36760954254).

23235586128 is an abundant number, since it is smaller than the sum of its proper divisors (50286322380).

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

23235586128 is a wasteful number, since it uses less digits than its factorization.

23235586128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234 (or 196 counting only the distinct ones).

The product of its digits is 691200, while the sum is 45.

The spelling of 23235586128 in words is "twenty-three billion, two hundred thirty-five million, five hundred eighty-six thousand, one hundred twenty-eight".