210691030968 has 48 divisors (see below), whose sum is σ = 622496230200. Its totient is φ = 63845766720.

The previous prime is 210691030967. The next prime is 210691030987. The reversal of 210691030968 is 869030196012.

It is a happy number.

210691030968 is a `hidden beast` number, since 210 + 69 + 10 + 309 + 68 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210691030967) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 133011223 + ... + 133012806.

Almost surely, 2^210691030968 is an apocalyptic number.

It is an amenable number.

210691030968 is an abundant number, since it is smaller than the sum of its proper divisors (411805199232).

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

210691030968 is a wasteful number, since it uses less digits than its factorization.

210691030968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266024052 (or 266024045 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

It can be divided in two parts, 21069103096 and 8, that added together give a square (21069103104 = 145152²).

The spelling of 210691030968 in words is "two hundred ten billion, six hundred ninety-one million, thirty thousand, nine hundred sixty-eight".