217373541852 has 12 divisors (see below), whose sum is σ = 507204931016. Its totient is φ = 72457847280.

The previous prime is 217373541809. The next prime is 217373541871. The reversal of 217373541852 is 258145373712.

217373541852 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

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, 9057230899 + ... + 9057230922.

Almost surely, 2^217373541852 is an apocalyptic number.

It is an amenable number.

217373541852 is an abundant number, since it is smaller than the sum of its proper divisors (289831389164).

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

217373541852 is a wasteful number, since it uses less digits than its factorization.

217373541852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18114461828 (or 18114461826 counting only the distinct ones).

The product of its digits is 1411200, while the sum is 48.

The spelling of 217373541852 in words is "two hundred seventeen billion, three hundred seventy-three million, five hundred forty-one thousand, eight hundred fifty-two".