211703648814 has 80 divisors (see below), whose sum is σ = 570674332800. Its totient is φ = 57303237456.

The previous prime is 211703648801. The next prime is 211703648861. The reversal of 211703648814 is 418846307112.

211703648814 is a `hidden beast` number, since 211 + 70 + 364 + 8 + 8 + 1 + 4 = 666.

It is a super-2 number, since 2×211703648814² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 211703648814.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 4891284 + ... + 4934375.

It is an arithmetic number, because the mean of its divisors is an integer number (7133429160).

Almost surely, 2^211703648814 is an apocalyptic number.

211703648814 is an abundant number, since it is smaller than the sum of its proper divisors (358970683986).

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

211703648814 is a wasteful number, since it uses less digits than its factorization.

211703648814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9825699 (or 9825690 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 45.

The spelling of 211703648814 in words is "two hundred eleven billion, seven hundred three million, six hundred forty-eight thousand, eight hundred fourteen".