16665453063 has 18 divisors (see below), whose sum is σ = 28002496704. Its totient is φ = 9523115784.

The previous prime is 16665453047. The next prime is 16665453149. The reversal of 16665453063 is 36035456661.

It is not a de Polignac number, because 16665453063 - 2⁴ = 16665453047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16665453043) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 18894631 + ... + 18895512.

Almost surely, 2^16665453063 is an apocalyptic number.

16665453063 is a deficient number, since it is larger than the sum of its proper divisors (11337043641).

16665453063 is a wasteful number, since it uses less digits than its factorization.

16665453063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37790163 (or 37790153 counting only the distinct ones).

The product of its (nonzero) digits is 1166400, while the sum is 45.

The spelling of 16665453063 in words is "sixteen billion, six hundred sixty-five million, four hundred fifty-three thousand, sixty-three".