16727891648 has 112 divisors (see below), whose sum is σ = 37761647616. Its totient is φ = 7297274880.

The previous prime is 16727891603. The next prime is 16727891689. The reversal of 16727891648 is 84619872761.

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, 1101515 + ... + 1116597.

It is an arithmetic number, because the mean of its divisors is an integer number (337157568).

Almost surely, 2^16727891648 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 16727891648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18880823808).

16727891648 is an abundant number, since it is smaller than the sum of its proper divisors (21033755968).

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

16727891648 is a wasteful number, since it uses less digits than its factorization.

16727891648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15182 (or 15172 counting only the distinct ones).

The product of its digits is 8128512, while the sum is 59.

The spelling of 16727891648 in words is "sixteen billion, seven hundred twenty-seven million, eight hundred ninety-one thousand, six hundred forty-eight".