216525526212 has 24 divisors (see below), whose sum is σ = 506317442176. Its totient is φ = 72019287648.

The previous prime is 216525526171. The next prime is 216525526219. The reversal of 216525526212 is 212625525612.

216525526212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (216525526219) 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 7 ways as a sum of consecutive naturals, for example, 19480183 + ... + 19491294.

Almost surely, 2^216525526212 is an apocalyptic number.

It is an amenable number.

216525526212 is an abundant number, since it is smaller than the sum of its proper divisors (289791915964).

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

216525526212 is a wasteful number, since it uses less digits than its factorization.

216525526212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38971947 (or 38971945 counting only the distinct ones).

The product of its digits is 144000, while the sum is 39.

The spelling of 216525526212 in words is "two hundred sixteen billion, five hundred twenty-five million, five hundred twenty-six thousand, two hundred twelve".