15281663216 has 80 divisors (see below), whose sum is σ = 32320327200. Its totient is φ = 6971940864.

The previous prime is 15281663207. The next prime is 15281663261. The reversal of 15281663216 is 61236618251.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4027016 + ... + 4030808.

It is an arithmetic number, because the mean of its divisors is an integer number (404004090).

Almost surely, 2^15281663216 is an apocalyptic number.

15281663216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15281663216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16160163600).

15281663216 is an abundant number, since it is smaller than the sum of its proper divisors (17038663984).

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

15281663216 is a wasteful number, since it uses less digits than its factorization.

15281663216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4306 (or 4300 counting only the distinct ones).

The product of its digits is 103680, while the sum is 41.

The spelling of 15281663216 in words is "fifteen billion, two hundred eighty-one million, six hundred sixty-three thousand, two hundred sixteen".