212731073766 has 32 divisors (see below), whose sum is σ = 474800095200. Its totient is φ = 70600701600.

The previous prime is 212731073747. The next prime is 212731073771. The reversal of 212731073766 is 667370137212.

212731073766 is a `hidden beast` number, since 2 + 1 + 273 + 1 + 0 + 7 + 376 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8589085 + ... + 8613816.

It is an arithmetic number, because the mean of its divisors is an integer number (14837502975).

Almost surely, 2^212731073766 is an apocalyptic number.

212731073766 is an abundant number, since it is smaller than the sum of its proper divisors (262069021434).

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

212731073766 is a wasteful number, since it uses less digits than its factorization.

212731073766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17203141 (or 17203135 counting only the distinct ones).

The product of its (nonzero) digits is 444528, while the sum is 45.

The spelling of 212731073766 in words is "two hundred twelve billion, seven hundred thirty-one million, seventy-three thousand, seven hundred sixty-six".