16281971888 has 80 divisors (see below), whose sum is σ = 39294318336. Its totient is φ = 6363567360.

The previous prime is 16281971879. The next prime is 16281971917. The reversal of 16281971888 is 88817918261.

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, 53483 + ... + 188213.

Almost surely, 2^16281971888 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 16281971888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19647159168).

16281971888 is an abundant number, since it is smaller than the sum of its proper divisors (23012346448).

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

16281971888 is a wasteful number, since it uses less digits than its factorization.

16281971888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134842 (or 134836 counting only the distinct ones).

The product of its digits is 3096576, while the sum is 59.

The spelling of 16281971888 in words is "sixteen billion, two hundred eighty-one million, nine hundred seventy-one thousand, eight hundred eighty-eight".