210966968816 has 40 divisors (see below), whose sum is σ = 419899475904. Its totient is φ = 102607223040.

The previous prime is 210966968809. The next prime is 210966968819. The reversal of 210966968816 is 618869669012.

It is a happy number.

It is a super-2 number, since 2×210966968816² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 2475881 + ... + 2559671.

Almost surely, 2^210966968816 is an apocalyptic number.

It is an amenable number.

210966968816 is a deficient number, since it is larger than the sum of its proper divisors (208932507088).

210966968816 is a wasteful number, since it uses less digits than its factorization.

210966968816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88089 (or 88083 counting only the distinct ones).

The product of its (nonzero) digits is 13436928, while the sum is 62.

The spelling of 210966968816 in words is "two hundred ten billion, nine hundred sixty-six million, nine hundred sixty-eight thousand, eight hundred sixteen".