23050505988 has 120 divisors (see below), whose sum is σ = 61651334360. Its totient is φ = 7507883520.

The previous prime is 23050505981. The next prime is 23050505993. The reversal of 23050505988 is 88950505032.

23050505988 is a `hidden beast` number, since 2 + 3 + 0 + 5 + 0 + 50 + 598 + 8 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 7539796224 + 15510709764 = 86832^2 + 124542^2 .

It is a super-2 number, since 2×23050505988² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23050505981) 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 39 ways as a sum of consecutive naturals, for example, 2573598 + ... + 2582538.

Almost surely, 2^23050505988 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 23050505988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30825667180).

23050505988 is an abundant number, since it is smaller than the sum of its proper divisors (38600828372).

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

23050505988 is a wasteful number, since it uses less digits than its factorization.

23050505988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9139 (or 9128 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 45.

The spelling of 23050505988 in words is "twenty-three billion, fifty million, five hundred five thousand, nine hundred eighty-eight".