212803600056 has 32 divisors (see below), whose sum is σ = 532154063760. Its totient is φ = 70915191552.

The previous prime is 212803600039. The next prime is 212803600109. The reversal of 212803600056 is 650006308212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1118875 + ... + 1295178.

Almost surely, 2^212803600056 is an apocalyptic number.

It is an amenable number.

212803600056 is an abundant number, since it is smaller than the sum of its proper divisors (319350463704).

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

212803600056 is a wasteful number, since it uses less digits than its factorization.

212803600056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2417735 (or 2417731 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

Adding to 212803600056 its reverse (650006308212), we get a palindrome (862809908268).

The spelling of 212803600056 in words is "two hundred twelve billion, eight hundred three million, six hundred thousand, fifty-six".