212850635388 has 12 divisors (see below), whose sum is σ = 496651482600. Its totient is φ = 70950211792.

The previous prime is 212850635303. The next prime is 212850635447. The reversal of 212850635388 is 883536058212.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 212850635388.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8868776463 + ... + 8868776486.

It is an arithmetic number, because the mean of its divisors is an integer number (41387623550).

Almost surely, 2^212850635388 is an apocalyptic number.

It is an amenable number.

212850635388 is an abundant number, since it is smaller than the sum of its proper divisors (283800847212).

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

212850635388 is a wasteful number, since it uses less digits than its factorization.

212850635388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17737552956 (or 17737552954 counting only the distinct ones).

The product of its (nonzero) digits is 2764800, while the sum is 51.

The spelling of 212850635388 in words is "two hundred twelve billion, eight hundred fifty million, six hundred thirty-five thousand, three hundred eighty-eight".