16045439256 has 768 divisors, whose sum is σ = 61284211200. Its totient is φ = 3863946240.

The previous prime is 16045439177. The next prime is 16045439287. The reversal of 16045439256 is 65293454061.

16045439256 is a `hidden beast` number, since 1 + 60 + 454 + 3 + 92 + 56 = 666.

It is a super-2 number, since 2×16045439256² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 239484135 + ... + 239484201.

It is an arithmetic number, because the mean of its divisors is an integer number (79797150).

Almost surely, 2^16045439256 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 16045439256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30642105600).

16045439256 is an abundant number, since it is smaller than the sum of its proper divisors (45238771944).

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

16045439256 is a wasteful number, since it uses less digits than its factorization.

16045439256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146 (or 107 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 45.

The spelling of 16045439256 in words is "sixteen billion, forty-five million, four hundred thirty-nine thousand, two hundred fifty-six".