16682177663 has 4 divisors (see below), whose sum is σ = 16684862040. Its totient is φ = 16679493288.

The previous prime is 16682177627. The next prime is 16682177689. The reversal of 16682177663 is 36677128661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36677128661 = 10223 ⋅3587707.

It is a cyclic number.

It is not a de Polignac number, because 16682177663 - 2⁶ = 16682177599 is a prime.

It is a super-2 number, since 2×16682177663² (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 (16682177063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1332845 + ... + 1345302.

It is an arithmetic number, because the mean of its divisors is an integer number (4171215510).

Almost surely, 2^16682177663 is an apocalyptic number.

16682177663 is a deficient number, since it is larger than the sum of its proper divisors (2684377).

16682177663 is an equidigital number, since it uses as much as digits as its factorization.

16682177663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2684376.

The product of its digits is 3048192, while the sum is 53.

The spelling of 16682177663 in words is "sixteen billion, six hundred eighty-two million, one hundred seventy-seven thousand, six hundred sixty-three".