211706732512 has 96 divisors (see below), whose sum is σ = 485492071680. Its totient is φ = 89905643520.

The previous prime is 211706732507. The next prime is 211706732513. The reversal of 211706732512 is 215237607112.

211706732512 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211706732513) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 44064 + ... + 652192.

It is an arithmetic number, because the mean of its divisors is an integer number (5057209080).

Almost surely, 2^211706732512 is an apocalyptic number.

211706732512 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211706732512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (242746035840).

211706732512 is an abundant number, since it is smaller than the sum of its proper divisors (273785339168).

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

211706732512 is a wasteful number, since it uses less digits than its factorization.

211706732512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 608216 (or 608208 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 37.

The spelling of 211706732512 in words is "two hundred eleven billion, seven hundred six million, seven hundred thirty-two thousand, five hundred twelve".