16543631212 has 12 divisors (see below), whose sum is σ = 28979941536. Its totient is φ = 8263647920.

The previous prime is 16543631183. The next prime is 16543631219. The reversal of 16543631212 is 21213634561.

It is not an unprimeable number, because it can be changed into a prime (16543631219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2037364 + ... + 2045467.

It is an arithmetic number, because the mean of its divisors is an integer number (2414995128).

Almost surely, 2^16543631212 is an apocalyptic number.

It is an amenable number.

16543631212 is a deficient number, since it is larger than the sum of its proper divisors (12436310324).

16543631212 is a wasteful number, since it uses less digits than its factorization.

16543631212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4083848 (or 4083846 counting only the distinct ones).

The product of its digits is 25920, while the sum is 34.

The spelling of 16543631212 in words is "sixteen billion, five hundred forty-three million, six hundred thirty-one thousand, two hundred twelve".