16671870018 has 24 divisors (see below), whose sum is σ = 36124822656. Its totient is φ = 5556915000.

The previous prime is 16671870011. The next prime is 16671870031. The reversal of 16671870018 is 81007817661.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (16671870011) 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, 415543 + ... + 453893.

It is an arithmetic number, because the mean of its divisors is an integer number (1505200944).

Almost surely, 2^16671870018 is an apocalyptic number.

16671870018 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

16671870018 is an abundant number, since it is smaller than the sum of its proper divisors (19452952638).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16671870018 is a wasteful number, since it uses less digits than its factorization.

16671870018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62510 (or 62507 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 45.

The spelling of 16671870018 in words is "sixteen billion, six hundred seventy-one million, eight hundred seventy thousand, eighteen".