16446463488 has 540 divisors, whose sum is σ = 59927847408. Its totient is φ = 4327464960.

The previous prime is 16446463483. The next prime is 16446463519. The reversal of 16446463488 is 88436464461.

It is a happy number.

16446463488 is a `hidden beast` number, since 1 + 6 + 44 + 64 + 63 + 488 = 666.

It is a super-2 number, since 2×16446463488² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16446463483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 38158633 + ... + 38159063.

Almost surely, 2^16446463488 is an apocalyptic number.

16446463488 is a gapful number since it is divisible by the number (18) 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 16446463488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29963923704).

16446463488 is an abundant number, since it is smaller than the sum of its proper divisors (43481383920).

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

16446463488 is a wasteful number, since it uses less digits than its factorization.

16446463488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495 (or 456 counting only the distinct ones).

The product of its digits is 10616832, while the sum is 54.

The spelling of 16446463488 in words is "sixteen billion, four hundred forty-six million, four hundred sixty-three thousand, four hundred eighty-eight".