211054727890 has 16 divisors (see below), whose sum is σ = 389164328280. Its totient is φ = 82362820480.

The previous prime is 211054727869. The next prime is 211054727911. The reversal of 211054727890 is 98727450112.

211054727890 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (211054727869) and next prime (211054727911).

It can be written as a sum of positive squares in 4 ways, for example, as 183380076441 + 27674651449 = 428229^2 + 166357^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 211054727890.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 257383405 + ... + 257384224.

Almost surely, 2^211054727890 is an apocalyptic number.

211054727890 is a deficient number, since it is larger than the sum of its proper divisors (178109600390).

211054727890 is a wasteful number, since it uses less digits than its factorization.

211054727890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 514767677.

The product of its (nonzero) digits is 282240, while the sum is 46.

The spelling of 211054727890 in words is "two hundred eleven billion, fifty-four million, seven hundred twenty-seven thousand, eight hundred ninety".