16017145728 has 64 divisors (see below), whose sum is σ = 42870453120. Its totient is φ = 5298275840.

The previous prime is 16017145721. The next prime is 16017145777. The reversal of 16017145728 is 82754171061.

It is a tau number, because it is divible by the number of its divisors (64).

It is a self number, because there is not a number n which added to its sum of digits gives 16017145728.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16017145721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108900 + ... + 209507.

It is an arithmetic number, because the mean of its divisors is an integer number (669850830).

Almost surely, 2^16017145728 is an apocalyptic number.

It is an amenable number.

16017145728 is an abundant number, since it is smaller than the sum of its proper divisors (26853307392).

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

16017145728 is a wasteful number, since it uses less digits than its factorization.

16017145728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318555 (or 318543 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 42.

The spelling of 16017145728 in words is "sixteen billion, seventeen million, one hundred forty-five thousand, seven hundred twenty-eight".