16448782280 has 128 divisors (see below), whose sum is σ = 44402688000. Its totient is φ = 5364990720.

The previous prime is 16448782253. The next prime is 16448782307. The reversal of 16448782280 is 8228784461.

It is an interprime number because it is at equal distance from previous prime (16448782253) and next prime (16448782307).

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, 496061 + ... + 528179.

It is an arithmetic number, because the mean of its divisors is an integer number (346896000).

Almost surely, 2^16448782280 is an apocalyptic number.

16448782280 is a gapful number since it is divisible by the number (10) 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 16448782280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22201344000).

16448782280 is an abundant number, since it is smaller than the sum of its proper divisors (27953905720).

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

16448782280 is a wasteful number, since it uses less digits than its factorization.

16448782280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32227 (or 32223 counting only the distinct ones).

The product of its (nonzero) digits is 1376256, while the sum is 50.

The spelling of 16448782280 in words is "sixteen billion, four hundred forty-eight million, seven hundred eighty-two thousand, two hundred eighty".