210966968817 has 48 divisors (see below), whose sum is σ = 339725498112. Its totient is φ = 125057410560.

The previous prime is 210966968809. The next prime is 210966968819. The reversal of 210966968817 is 718869669012.

It is not a de Polignac number, because 210966968817 - 2³ = 210966968809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (210966968819) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7603113 + ... + 7630809.

It is an arithmetic number, because the mean of its divisors is an integer number (7077614544).

Almost surely, 2^210966968817 is an apocalyptic number.

It is an amenable number.

210966968817 is a deficient number, since it is larger than the sum of its proper divisors (128758529295).

210966968817 is a wasteful number, since it uses less digits than its factorization.

210966968817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29398 (or 29395 counting only the distinct ones).

The product of its (nonzero) digits is 15676416, while the sum is 63.

The spelling of 210966968817 in words is "two hundred ten billion, nine hundred sixty-six million, nine hundred sixty-eight thousand, eight hundred seventeen".