212745611256 has 16 divisors (see below), whose sum is σ = 531864028200. Its totient is φ = 70915203744.

The previous prime is 212745611251. The next prime is 212745611279. The reversal of 212745611256 is 652116547212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212745611251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4432200211 + ... + 4432200258.

Almost surely, 2^212745611256 is an apocalyptic number.

It is an amenable number.

212745611256 is an abundant number, since it is smaller than the sum of its proper divisors (319118416944).

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

212745611256 is a wasteful number, since it uses less digits than its factorization.

212745611256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8864400478 (or 8864400474 counting only the distinct ones).

The product of its digits is 201600, while the sum is 42.

The spelling of 212745611256 in words is "two hundred twelve billion, seven hundred forty-five million, six hundred eleven thousand, two hundred fifty-six".