16872980647 has 4 divisors (see below), whose sum is σ = 17761032280. Its totient is φ = 15984929016.

The previous prime is 16872980587. The next prime is 16872980671. The reversal of 16872980647 is 74608927861.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74608927861 = 13 ⋅5739148297.

It is a cyclic number.

It is not a de Polignac number, because 16872980647 - 2¹¹ = 16872978599 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16872980591 and 16872980600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16872987647) 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 3 ways as a sum of consecutive naturals, for example, 444025788 + ... + 444025825.

It is an arithmetic number, because the mean of its divisors is an integer number (4440258070).

Almost surely, 2^16872980647 is an apocalyptic number.

16872980647 is a deficient number, since it is larger than the sum of its proper divisors (888051633).

16872980647 is an equidigital number, since it uses as much as digits as its factorization.

16872980647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 888051632.

The product of its (nonzero) digits is 8128512, while the sum is 58.

The spelling of 16872980647 in words is "sixteen billion, eight hundred seventy-two million, nine hundred eighty thousand, six hundred forty-seven".