211897237234752 has 168 divisors, whose sum is σ = 624549646902272. Its totient is φ = 68638683571200.

The previous prime is 211897237234747. The next prime is 211897237234763. The reversal of 211897237234752 is 257432732798112.

211897237234752 is a `hidden beast` number, since 2 + 1 + 1 + 8 + 9 + 7 + 237 + 2 + 347 + 52 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 211897237234752.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11154177 + ... + 23413887.

Almost surely, 2^{211897237234752} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211897237234752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (312274823451136).

211897237234752 is an abundant number, since it is smaller than the sum of its proper divisors (412652409667520).

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

211897237234752 is a wasteful number, since it uses less digits than its factorization.

211897237234752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12260577 (or 12260564 counting only the distinct ones).

The product of its digits is 71124480, while the sum is 63.

The spelling of 211897237234752 in words is "two hundred eleven trillion, eight hundred ninety-seven billion, two hundred thirty-seven million, two hundred thirty-four thousand, seven hundred fifty-two".