16504254065663 has 32 divisors (see below), whose sum is σ = 20689956510720. Its totient is φ = 12816637102080.

The previous prime is 16504254065647. The next prime is 16504254065683. The reversal of 16504254065663 is 36656045240561.

It is not a de Polignac number, because 16504254065663 - 2⁴ = 16504254065647 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16504254065603) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 952031 + ... + 5823647.

It is an arithmetic number, because the mean of its divisors is an integer number (646561140960).

Almost surely, 2^{16504254065663} is an apocalyptic number.

16504254065663 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

16504254065663 is a deficient number, since it is larger than the sum of its proper divisors (4185702445057).

16504254065663 is a wasteful number, since it uses less digits than its factorization.

16504254065663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4872327.

The product of its (nonzero) digits is 15552000, while the sum is 53.

The spelling of 16504254065663 in words is "sixteen trillion, five hundred four billion, two hundred fifty-four million, sixty-five thousand, six hundred sixty-three".