15223542216 has 128 divisors (see below), whose sum is σ = 40797388800. Its totient is φ = 4719686400.

The previous prime is 15223542181. The next prime is 15223542221. The reversal of 15223542216 is 61224532251.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11700766 + ... + 11702066.

It is an arithmetic number, because the mean of its divisors is an integer number (318729600).

Almost surely, 2^15223542216 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 15223542216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20398694400).

15223542216 is an abundant number, since it is smaller than the sum of its proper divisors (25573846584).

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

15223542216 is a wasteful number, since it uses less digits than its factorization.

15223542216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1779 (or 1775 counting only the distinct ones).

The product of its digits is 28800, while the sum is 33.

The spelling of 15223542216 in words is "fifteen billion, two hundred twenty-three million, five hundred forty-two thousand, two hundred sixteen".