16727891647 has 8 divisors (see below), whose sum is σ = 16786577360. Its totient is φ = 16669255680.

The previous prime is 16727891603. The next prime is 16727891689. The reversal of 16727891647 is 74619872761.

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 16727891647 - 2¹¹ = 16727889599 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16727891591 and 16727891600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16727691647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 739903 + ... + 762175.

It is an arithmetic number, because the mean of its divisors is an integer number (2098322170).

Almost surely, 2^16727891647 is an apocalyptic number.

16727891647 is a deficient number, since it is larger than the sum of its proper divisors (58685713).

16727891647 is a wasteful number, since it uses less digits than its factorization.

16727891647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24873.

The product of its digits is 7112448, while the sum is 58.

It can be divided in two parts, 1672789 and 1647, that added together give a square (1674436 = 1294²).

The spelling of 16727891647 in words is "sixteen billion, seven hundred twenty-seven million, eight hundred ninety-one thousand, six hundred forty-seven".