16143446663 has 4 divisors (see below), whose sum is σ = 16143821520. Its totient is φ = 16143071808.

The previous prime is 16143446651. The next prime is 16143446677. The reversal of 16143446663 is 36664434161.

16143446663 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36664434161 = 37 ⋅990930653.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16143446663 is a prime.

It is a super-2 number, since 2×16143446663² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16143446863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112970 + ... + 212247.

It is an arithmetic number, because the mean of its divisors is an integer number (4035955380).

Almost surely, 2^16143446663 is an apocalyptic number.

16143446663 is a deficient number, since it is larger than the sum of its proper divisors (374857).

16143446663 is an equidigital number, since it uses as much as digits as its factorization.

16143446663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374856.

The product of its digits is 746496, while the sum is 44.

The spelling of 16143446663 in words is "sixteen billion, one hundred forty-three million, four hundred forty-six thousand, six hundred sixty-three".