211703052544 has 81 divisors (see below), whose sum is σ = 427650019923. Its totient is φ = 104596340736.

The previous prime is 211703052541. The next prime is 211703052601. The reversal of 211703052544 is 445250307112.

The square root of 211703052544 is 460112.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 89281440000 + 122421612544 = 298800^2 + 349888^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211703052541) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1096906912 + ... + 1096907104.

Almost surely, 2^211703052544 is an apocalyptic number.

211703052544 is the 460112-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211703052544

211703052544 is an abundant number, since it is smaller than the sum of its proper divisors (215946967379).

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

211703052544 is an frugal number, since it uses more digits than its factorization.

211703052544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700 (or 344 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 34.

Adding to 211703052544 its reverse (445250307112), we get a palindrome (656953359656).

The spelling of 211703052544 in words is "two hundred eleven billion, seven hundred three million, fifty-two thousand, five hundred forty-four".