16456520064 has 192 divisors, whose sum is σ = 46696689360. Its totient is φ = 5133828096.

The previous prime is 16456520063. The next prime is 16456520111. The reversal of 16456520064 is 46002565461.

It is a tau number, because it is divible by the number of its divisors (192).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16456520063) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28520544 + ... + 28521120.

Almost surely, 2^16456520064 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 16456520064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23348344680).

16456520064 is an abundant number, since it is smaller than the sum of its proper divisors (30240169296).

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

16456520064 is a wasteful number, since it uses less digits than its factorization.

16456520064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 885 (or 856 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 39.

The spelling of 16456520064 in words is "sixteen billion, four hundred fifty-six million, five hundred twenty thousand, sixty-four".