16040704128 has 128 divisors (see below), whose sum is σ = 43911669120. Its totient is φ = 5184331776.

The previous prime is 16040704123. The next prime is 16040704171. The reversal of 16040704128 is 82140704061.

It is a tau number, because it is divible by the number of its divisors (128).

It is not an unprimeable number, because it can be changed into a prime (16040704123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4445301 + ... + 4448907.

It is an arithmetic number, because the mean of its divisors is an integer number (343059915).

Almost surely, 2^16040704128 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 16040704128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21955834560).

16040704128 is an abundant number, since it is smaller than the sum of its proper divisors (27870964992).

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

16040704128 is a wasteful number, since it uses less digits than its factorization.

16040704128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3974 (or 3962 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 33.

The spelling of 16040704128 in words is "sixteen billion, forty million, seven hundred four thousand, one hundred twenty-eight".