211543297272 has 64 divisors (see below), whose sum is σ = 613168992000. Its totient is φ = 67448585952.

The previous prime is 211543297243. The next prime is 211543297279. The reversal of 211543297272 is 272792345112.

211543297272 is a `hidden beast` number, since 2 + 1 + 1 + 54 + 329 + 7 + 272 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211543297279) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21285622 + ... + 21295557.

It is an arithmetic number, because the mean of its divisors is an integer number (9580765500).

Almost surely, 2^211543297272 is an apocalyptic number.

It is an amenable number.

211543297272 is an abundant number, since it is smaller than the sum of its proper divisors (401625694728).

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

211543297272 is a wasteful number, since it uses less digits than its factorization.

211543297272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42581217 (or 42581207 counting only the distinct ones).

The product of its digits is 423360, while the sum is 45.

The spelling of 211543297272 in words is "two hundred eleven billion, five hundred forty-three million, two hundred ninety-seven thousand, two hundred seventy-two".