16463956656 has 160 divisors (see below), whose sum is σ = 50319065088. Its totient is φ = 4539260160.

The previous prime is 16463956631. The next prime is 16463956673. The reversal of 16463956656 is 65665936461.

It is a junction number, because it is equal to n+sod(n) for n = 16463956596 and 16463956605.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3987265 + ... + 3991391.

Almost surely, 2^16463956656 is an apocalyptic number.

16463956656 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 16463956656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25159532544).

16463956656 is an abundant number, since it is smaller than the sum of its proper divisors (33855108432).

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

16463956656 is a wasteful number, since it uses less digits than its factorization.

16463956656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4559 (or 4553 counting only the distinct ones).

The product of its digits is 20995200, while the sum is 57.

The spelling of 16463956656 in words is "sixteen billion, four hundred sixty-three million, nine hundred fifty-six thousand, six hundred fifty-six".