216833405172 has 24 divisors (see below), whose sum is σ = 515490738336. Its totient is φ = 70914069408.

The previous prime is 216833405171. The next prime is 216833405221. The reversal of 216833405172 is 271504338612.

216833405172 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 not an unprimeable number, because it can be changed into a prime (216833405171) 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, 170465878 + ... + 170467149.

It is an arithmetic number, because the mean of its divisors is an integer number (21478780764).

Almost surely, 2^216833405172 is an apocalyptic number.

It is an amenable number.

216833405172 is an abundant number, since it is smaller than the sum of its proper divisors (298657333164).

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

216833405172 is a wasteful number, since it uses less digits than its factorization.

216833405172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340933087 (or 340933085 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 42.

The spelling of 216833405172 in words is "two hundred sixteen billion, eight hundred thirty-three million, four hundred five thousand, one hundred seventy-two".