212541555166 has 8 divisors (see below), whose sum is σ = 324827659944. Its totient is φ = 104265668520.

The previous prime is 212541555151. The next prime is 212541555223. The reversal of 212541555166 is 661555145212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1002554400 + ... + 1002554611.

It is an arithmetic number, because the mean of its divisors is an integer number (40603457493).

Almost surely, 2^212541555166 is an apocalyptic number.

212541555166 is a deficient number, since it is larger than the sum of its proper divisors (112286104778).

212541555166 is a wasteful number, since it uses less digits than its factorization.

212541555166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2005109066.

The product of its digits is 360000, while the sum is 43.

The spelling of 212541555166 in words is "two hundred twelve billion, five hundred forty-one million, five hundred fifty-five thousand, one hundred sixty-six".