11430023550 has 192 divisors, whose sum is σ = 31570622208. Its totient is φ = 2713600000.

The previous prime is 11430023531. The next prime is 11430023551. The reversal of 11430023550 is 5532003411.

It is a self number, because there is not a number n which added to its sum of digits gives 11430023550.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11430023551) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 17831230 + ... + 17831870.

It is an arithmetic number, because the mean of its divisors is an integer number (164430324).

Almost surely, 2^11430023550 is an apocalyptic number.

11430023550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 11430023550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15785311104).

11430023550 is an abundant number, since it is smaller than the sum of its proper divisors (20140598658).

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

11430023550 is a wasteful number, since it uses less digits than its factorization.

11430023550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 875 (or 870 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

Adding to 11430023550 its reverse (5532003411), we get a palindrome (16962026961).

The spelling of 11430023550 in words is "eleven billion, four hundred thirty million, twenty-three thousand, five hundred fifty".