212803990659 has 36 divisors (see below), whose sum is σ = 341843229936. Its totient is φ = 127416908736.

The previous prime is 212803990657. The next prime is 212803990669. The reversal of 212803990659 is 956099308212.

It is a happy number.

It is not a de Polignac number, because 212803990659 - 2¹ = 212803990657 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212803990657) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1834407 + ... + 1946960.

It is an arithmetic number, because the mean of its divisors is an integer number (9495645276).

Almost surely, 2^212803990659 is an apocalyptic number.

212803990659 is a deficient number, since it is larger than the sum of its proper divisors (129039239277).

212803990659 is a wasteful number, since it uses less digits than its factorization.

212803990659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3781436 (or 3781420 counting only the distinct ones).

The product of its (nonzero) digits is 2099520, while the sum is 54.

The spelling of 212803990659 in words is "two hundred twelve billion, eight hundred three million, nine hundred ninety thousand, six hundred fifty-nine".