16636642022663 has 8 divisors (see below), whose sum is σ = 17916710481600. Its totient is φ = 15356620244448.

The previous prime is 16636642022659. The next prime is 16636642022747. The reversal of 16636642022663 is 36622024663661.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16636642022663 - 2² = 16636642022659 is a prime.

It is a super-2 number, since 2×16636642022663² (a number of 27 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 (16636642022633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10928228 + ... + 12357161.

It is an arithmetic number, because the mean of its divisors is an integer number (2239588810200).

Almost surely, 2^{16636642022663} is an apocalyptic number.

16636642022663 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

16636642022663 is a deficient number, since it is larger than the sum of its proper divisors (1280068458937).

16636642022663 is a wasteful number, since it uses less digits than its factorization.

16636642022663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23340361.

The product of its (nonzero) digits is 13436928, while the sum is 53.

The spelling of 16636642022663 in words is "sixteen trillion, six hundred thirty-six billion, six hundred forty-two million, twenty-two thousand, six hundred sixty-three".