15220445208 has 128 divisors (see below), whose sum is σ = 40043731200. Its totient is φ = 4816018944.

The previous prime is 15220445179. The next prime is 15220445209. The reversal of 15220445208 is 80254402251.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15220445209) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6483891 + ... + 6486237.

It is an arithmetic number, because the mean of its divisors is an integer number (312841650).

Almost surely, 2^15220445208 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 15220445208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20021865600).

15220445208 is an abundant number, since it is smaller than the sum of its proper divisors (24823285992).

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

15220445208 is a wasteful number, since it uses less digits than its factorization.

15220445208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2569 (or 2565 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 33.

Adding to 15220445208 its reverse (80254402251), we get a palindrome (95474847459).

The spelling of 15220445208 in words is "fifteen billion, two hundred twenty million, four hundred forty-five thousand, two hundred eight".