15544230212 has 72 divisors (see below), whose sum is σ = 32449654944. Its totient is φ = 6494197248.

The previous prime is 15544230197. The next prime is 15544230217. The reversal of 15544230212 is 21203244551.

It is not an unprimeable number, because it can be changed into a prime (15544230217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1267703 + ... + 1279905.

It is an arithmetic number, because the mean of its divisors is an integer number (450689652).

Almost surely, 2^15544230212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15544230212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16224827472).

15544230212 is an abundant number, since it is smaller than the sum of its proper divisors (16905424732).

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

15544230212 is a wasteful number, since it uses less digits than its factorization.

15544230212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12385 (or 12376 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

Adding to 15544230212 its reverse (21203244551), we get a palindrome (36747474763).

The spelling of 15544230212 in words is "fifteen billion, five hundred forty-four million, two hundred thirty thousand, two hundred twelve".