23420030550 has 96 divisors (see below), whose sum is σ = 66655209984. Its totient is φ = 5330880000.

The previous prime is 23420030549. The next prime is 23420030561. The reversal of 23420030550 is 5503002432.

It is a self number, because there is not a number n which added to its sum of digits gives 23420030550.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 206775 + ... + 299325.

It is an arithmetic number, because the mean of its divisors is an integer number (694325104).

Almost surely, 2^23420030550 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23420030550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33327604992).

23420030550 is an abundant number, since it is smaller than the sum of its proper divisors (43235179434).

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

23420030550 is a wasteful number, since it uses less digits than its factorization.

23420030550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92814 (or 92809 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 24.

Adding to 23420030550 its reverse (5503002432), we get a palindrome (28923032982).

The spelling of 23420030550 in words is "twenty-three billion, four hundred twenty million, thirty thousand, five hundred fifty".