16918334971 has 4 divisors (see below), whose sum is σ = 17464087744. Its totient is φ = 16372582200.

The previous prime is 16918334921. The next prime is 16918334987. The reversal of 16918334971 is 17943381961.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17943381961 = 29 ⋅618737309.

It is a cyclic number.

It is not a de Polignac number, because 16918334971 - 2¹¹ = 16918332923 is a prime.

It is the 130071-st Hogben number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16918334921) by changing a digit.

It is a nontrivial repunit in base 130070.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 272876340 + ... + 272876401.

It is an arithmetic number, because the mean of its divisors is an integer number (4366021936).

Almost surely, 2^16918334971 is an apocalyptic number.

16918334971 is a deficient number, since it is larger than the sum of its proper divisors (545752773).

16918334971 is an equidigital number, since it uses as much as digits as its factorization.

16918334971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 545752772.

The product of its digits is 979776, while the sum is 52.

The spelling of 16918334971 in words is "sixteen billion, nine hundred eighteen million, three hundred thirty-four thousand, nine hundred seventy-one".