211325146866 has 48 divisors (see below), whose sum is σ = 468171002520. Its totient is φ = 68866586880.

The previous prime is 211325146853. The next prime is 211325146883. The reversal of 211325146866 is 668641523112.

211325146866 is a `hidden beast` number, since 2 + 1 + 13 + 2 + 514 + 68 + 66 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 169027054641 + 42298092225 = 411129^2 + 205665^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 126081 + ... + 662228.

Almost surely, 2^211325146866 is an apocalyptic number.

211325146866 is an abundant number, since it is smaller than the sum of its proper divisors (256845855654).

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

211325146866 is a wasteful number, since it uses less digits than its factorization.

211325146866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 788651 (or 788648 counting only the distinct ones).

The product of its digits is 414720, while the sum is 45.

Adding to 211325146866 its reverse (668641523112), we get a palindrome (879966669978).

The spelling of 211325146866 in words is "two hundred eleven billion, three hundred twenty-five million, one hundred forty-six thousand, eight hundred sixty-six".