145520423200 has 144 divisors (see below), whose sum is σ = 367266493440. Its totient is φ = 56245248000.

The previous prime is 145520423189. The next prime is 145520423201. The reversal of 145520423200 is 2324025541.

It is not an unprimeable number, because it can be changed into a prime (145520423201) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17827120 + ... + 17835280.

It is an arithmetic number, because the mean of its divisors is an integer number (2550461760).

Almost surely, 2^145520423200 is an apocalyptic number.

145520423200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 145520423200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (183633246720).

145520423200 is an abundant number, since it is smaller than the sum of its proper divisors (221746070240).

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

145520423200 is a wasteful number, since it uses less digits than its factorization.

145520423200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8931 (or 8918 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

Adding to 145520423200 its reverse (2324025541), we get a palindrome (147844448741).

The spelling of 145520423200 in words is "one hundred forty-five billion, five hundred twenty million, four hundred twenty-three thousand, two hundred".