212550316506 has 36 divisors (see below), whose sum is σ = 506197659786. Its totient is φ = 64409186160.

The previous prime is 212550316499. The next prime is 212550316529. The reversal of 212550316506 is 605613055212.

212550316506 is a `hidden beast` number, since 2 + 12 + 550 + 31 + 65 + 0 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 209709959481 + 2840357025 = 457941^2 + 53295^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 48792661 + ... + 48797016.

Almost surely, 2^212550316506 is an apocalyptic number.

212550316506 is an abundant number, since it is smaller than the sum of its proper divisors (293647343280).

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

212550316506 is a wasteful number, since it uses less digits than its factorization.

212550316506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97589707 (or 97589693 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

The spelling of 212550316506 in words is "two hundred twelve billion, five hundred fifty million, three hundred sixteen thousand, five hundred six".