15530445243 has 12 divisors (see below), whose sum is σ = 22800618048. Its totient is φ = 10183898160.

The previous prime is 15530445233. The next prime is 15530445247. The reversal of 15530445243 is 34254403551.

It is not a de Polignac number, because 15530445243 - 2⁵ = 15530445211 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 15530445198 and 15530445207.

It is not an unprimeable number, because it can be changed into a prime (15530445247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14143755 + ... + 14144852.

It is an arithmetic number, because the mean of its divisors is an integer number (1900051504).

Almost surely, 2^15530445243 is an apocalyptic number.

15530445243 is a deficient number, since it is larger than the sum of its proper divisors (7270172805).

15530445243 is a wasteful number, since it uses less digits than its factorization.

15530445243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28288674 (or 28288671 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 36.

Adding to 15530445243 its reverse (34254403551), we get a palindrome (49784848794).

The spelling of 15530445243 in words is "fifteen billion, five hundred thirty million, four hundred forty-five thousand, two hundred forty-three".