211238938368 has 360 divisors, whose sum is σ = 672956732448. Its totient is φ = 65672183808.

The previous prime is 211238938343. The next prime is 211238938369. The reversal of 211238938368 is 863839832112.

211238938368 is a `hidden beast` number, since 2 + 1 + 123 + 89 + 383 + 68 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211238938369) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 39831205 + ... + 39836507.

Almost surely, 2^211238938368 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 211238938368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (336478366224).

211238938368 is an abundant number, since it is smaller than the sum of its proper divisors (461717794080).

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

211238938368 is a wasteful number, since it uses less digits than its factorization.

211238938368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5461 (or 5438 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 54.

The spelling of 211238938368 in words is "two hundred eleven billion, two hundred thirty-eight million, nine hundred thirty-eight thousand, three hundred sixty-eight".