16622557056 has 768 divisors, whose sum is σ = 61865856000. Its totient is φ = 4175069184.

The previous prime is 16622557051. The next prime is 16622557087. The reversal of 16622557056 is 65075522661.

16622557056 is a `hidden beast` number, since 1 + 6 + 6 + 2 + 25 + 570 + 56 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16622557051) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 186770260 + ... + 186770348.

It is an arithmetic number, because the mean of its divisors is an integer number (80554500).

Almost surely, 2^16622557056 is an apocalyptic number.

16622557056 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 16622557056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30932928000).

16622557056 is an abundant number, since it is smaller than the sum of its proper divisors (45243298944).

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

16622557056 is a wasteful number, since it uses less digits than its factorization.

16622557056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211 (or 196 counting only the distinct ones).

The product of its (nonzero) digits is 756000, while the sum is 45.

The spelling of 16622557056 in words is "sixteen billion, six hundred twenty-two million, five hundred fifty-seven thousand, fifty-six".