15663145224 has 64 divisors (see below), whose sum is σ = 40580352000. Its totient is φ = 5032025600.

The previous prime is 15663145187. The next prime is 15663145259. The reversal of 15663145224 is 42254136651.

It is a super-2 number, since 2×15663145224² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 376249 + ... + 415799.

It is an arithmetic number, because the mean of its divisors is an integer number (634068000).

Almost surely, 2^15663145224 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 15663145224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20290176000).

15663145224 is an abundant number, since it is smaller than the sum of its proper divisors (24917206776).

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

15663145224 is a wasteful number, since it uses less digits than its factorization.

15663145224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40158 (or 40154 counting only the distinct ones).

The product of its digits is 172800, while the sum is 39.

The spelling of 15663145224 in words is "fifteen billion, six hundred sixty-three million, one hundred forty-five thousand, two hundred twenty-four".