16681071800 has 48 divisors (see below), whose sum is σ = 38848518000. Its totient is φ = 6661241600.

The previous prime is 16681071739. The next prime is 16681071863. The reversal of 16681071800 is 817018661.

16681071800 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50180 + ... + 189420.

It is an arithmetic number, because the mean of its divisors is an integer number (809344125).

Almost surely, 2^16681071800 is an apocalyptic number.

16681071800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16681071800 is an abundant number, since it is smaller than the sum of its proper divisors (22167446200).

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

16681071800 is a wasteful number, since it uses less digits than its factorization.

16681071800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139856 (or 139847 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 38.

The spelling of 16681071800 in words is "sixteen billion, six hundred eighty-one million, seventy-one thousand, eight hundred".