211250840238 has 128 divisors (see below), whose sum is σ = 509619962880. Its totient is φ = 64603008000.

The previous prime is 211250840233. The next prime is 211250840249. The reversal of 211250840238 is 832048052112.

It is a happy number.

211250840238 is a `hidden beast` number, since 2 + 112 + 508 + 4 + 0 + 2 + 38 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211250840233) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 75688623 + ... + 75691413.

It is an arithmetic number, because the mean of its divisors is an integer number (3981405960).

Almost surely, 2^211250840238 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211250840238, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (254809981440).

211250840238 is an abundant number, since it is smaller than the sum of its proper divisors (298369122642).

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

211250840238 is a wasteful number, since it uses less digits than its factorization.

211250840238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4871 (or 4865 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The spelling of 211250840238 in words is "two hundred eleven billion, two hundred fifty million, eight hundred forty thousand, two hundred thirty-eight".