15143251240 has 64 divisors (see below), whose sum is σ = 36755888400. Its totient is φ = 5581811712.

The previous prime is 15143251187. The next prime is 15143251241. The reversal of 15143251240 is 4215234151.

15143251240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 2155002084 + 12988249156 = 46422^2 + 113966^2 .

It is a junction number, because it is equal to n+sod(n) for n = 15143251199 and 15143251208.

It is not an unprimeable number, because it can be changed into a prime (15143251241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 283806 + ... + 332914.

Almost surely, 2^15143251240 is an apocalyptic number.

15143251240 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 15143251240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18377944200).

15143251240 is an abundant number, since it is smaller than the sum of its proper divisors (21612637160).

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

15143251240 is a wasteful number, since it uses less digits than its factorization.

15143251240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49726 (or 49722 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

Adding to 15143251240 its reverse (4215234151), we get a palindrome (19358485391).

The spelling of 15143251240 in words is "fifteen billion, one hundred forty-three million, two hundred fifty-one thousand, two hundred forty".