212644287306 has 48 divisors (see below), whose sum is σ = 502826863968. Its totient is φ = 64410343200.

The previous prime is 212644287287. The next prime is 212644287319. The reversal of 212644287306 is 603782446212.

It is a happy number.

212644287306 is a `hidden beast` number, since 2 + 1 + 2 + 64 + 4 + 287 + 306 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 242980 + ... + 695936.

It is an arithmetic number, because the mean of its divisors is an integer number (10475559666).

Almost surely, 2^212644287306 is an apocalyptic number.

212644287306 is an abundant number, since it is smaller than the sum of its proper divisors (290182576662).

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

212644287306 is a wasteful number, since it uses less digits than its factorization.

212644287306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455347 (or 455344 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 45.

The spelling of 212644287306 in words is "two hundred twelve billion, six hundred forty-four million, two hundred eighty-seven thousand, three hundred six".