16440605056 has 64 divisors (see below), whose sum is σ = 33030154080. Its totient is φ = 8150990848.

The previous prime is 16440605053. The next prime is 16440605107. The reversal of 16440605056 is 65050604461.

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

It is a super-3 number, since 3×16440605056³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16440605053) 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, 8900325 + ... + 8902171.

Almost surely, 2^16440605056 is an apocalyptic number.

16440605056 is a gapful number since it is divisible by the number (16) 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 16440605056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16515077040).

16440605056 is an abundant number, since it is smaller than the sum of its proper divisors (16589549024).

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

16440605056 is a wasteful number, since it uses less digits than its factorization.

16440605056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2411 (or 2399 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 37.

The spelling of 16440605056 in words is "sixteen billion, four hundred forty million, six hundred five thousand, fifty-six".