15145421200 has 240 divisors, whose sum is σ = 44985870720. Its totient is φ = 4771676160.

The previous prime is 15145421183. The next prime is 15145421243. The reversal of 15145421200 is 212454151.

It is a Harshad number since it is a multiple of its sum of digits (25).

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, 9353991 + ... + 9355609.

It is an arithmetic number, because the mean of its divisors is an integer number (187441128).

Almost surely, 2^15145421200 is an apocalyptic number.

15145421200 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 15145421200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22492935360).

15145421200 is an abundant number, since it is smaller than the sum of its proper divisors (29840449520).

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

15145421200 is a wasteful number, since it uses less digits than its factorization.

15145421200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1914 (or 1903 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 25.

Adding to 15145421200 its reverse (212454151), we get a palindrome (15357875351).

The spelling of 15145421200 in words is "fifteen billion, one hundred forty-five million, four hundred twenty-one thousand, two hundred".