16671600643 has 12 divisors (see below), whose sum is σ = 16980116160. Its totient is φ = 16368319296.

The previous prime is 16671600611. The next prime is 16671600679. The reversal of 16671600643 is 34600617661.

It is not a de Polignac number, because 16671600643 - 2⁵ = 16671600611 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16671600596 and 16671600605.

It is not an unprimeable number, because it can be changed into a prime (16671600683) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1181353 + ... + 1195381.

It is an arithmetic number, because the mean of its divisors is an integer number (1415009680).

Almost surely, 2^16671600643 is an apocalyptic number.

16671600643 is a deficient number, since it is larger than the sum of its proper divisors (308515517).

16671600643 is an equidigital number, since it uses as much as digits as its factorization.

16671600643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14398 (or 14325 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 40.

The spelling of 16671600643 in words is "sixteen billion, six hundred seventy-one million, six hundred thousand, six hundred forty-three".