211934329668 has 18 divisors (see below), whose sum is σ = 535722888974. Its totient is φ = 70644776544.

The previous prime is 211934329643. The next prime is 211934329669. The reversal of 211934329668 is 866923439112.

211934329668 is a `hidden beast` number, since 2 + 1 + 1 + 9 + 343 + 296 + 6 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 176818568004 + 35115761664 = 420498^2 + 187392^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (211934329669) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2943532321 + ... + 2943532392.

Almost surely, 2^211934329668 is an apocalyptic number.

It is an amenable number.

211934329668 is an abundant number, since it is smaller than the sum of its proper divisors (323788559306).

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

211934329668 is a wasteful number, since it uses less digits than its factorization.

211934329668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5887064723 (or 5887064718 counting only the distinct ones).

The product of its digits is 3359232, while the sum is 54.

The spelling of 211934329668 in words is "two hundred eleven billion, nine hundred thirty-four million, three hundred twenty-nine thousand, six hundred sixty-eight".