210966968818 has 32 divisors (see below), whose sum is σ = 322222320000. Its totient is φ = 103572483840.

The previous prime is 210966968809. The next prime is 210966968819. The reversal of 210966968818 is 818869669012.

It is a super-3 number, since 3×210966968818³ (a number of 35 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 210966968818.

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 15 ways as a sum of consecutive naturals, for example, 50001913 + ... + 50006131.

It is an arithmetic number, because the mean of its divisors is an integer number (10069447500).

Almost surely, 2^210966968818 is an apocalyptic number.

210966968818 is a deficient number, since it is larger than the sum of its proper divisors (111255351182).

210966968818 is a wasteful number, since it uses less digits than its factorization.

210966968818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5650.

The product of its (nonzero) digits is 17915904, while the sum is 64.

The spelling of 210966968818 in words is "two hundred ten billion, nine hundred sixty-six million, nine hundred sixty-eight thousand, eight hundred eighteen".