16886836639 has 4 divisors (see below), whose sum is σ = 16908683256. Its totient is φ = 16864990024.

The previous prime is 16886836567. The next prime is 16886836669. The reversal of 16886836639 is 93663868861.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16886836639 - 2¹³ = 16886828447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16886836669) 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, 10922149 + ... + 10923694.

It is an arithmetic number, because the mean of its divisors is an integer number (4227170814).

Almost surely, 2^16886836639 is an apocalyptic number.

16886836639 is a deficient number, since it is larger than the sum of its proper divisors (21846617).

16886836639 is an equidigital number, since it uses as much as digits as its factorization.

16886836639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21846616.

The product of its digits is 53747712, while the sum is 64.

The spelling of 16886836639 in words is "sixteen billion, eight hundred eighty-six million, eight hundred thirty-six thousand, six hundred thirty-nine".