16918323475 has 6 divisors (see below), whose sum is σ = 20978721140. Its totient is φ = 13534658760.

The previous prime is 16918323473. The next prime is 16918323479. The reversal of 16918323475 is 57432381961.

It is not a de Polignac number, because 16918323475 - 2¹ = 16918323473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16918323473) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 338366445 + ... + 338366494.

Almost surely, 2^16918323475 is an apocalyptic number.

16918323475 is a deficient number, since it is larger than the sum of its proper divisors (4060397665).

16918323475 is an equidigital number, since it uses as much as digits as its factorization.

16918323475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 676732949 (or 676732944 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 49.

The spelling of 16918323475 in words is "sixteen billion, nine hundred eighteen million, three hundred twenty-three thousand, four hundred seventy-five".