211085804260 has 24 divisors (see below), whose sum is σ = 443492474040. Its totient is φ = 84393886464.

The previous prime is 211085804257. The next prime is 211085804309. The reversal of 211085804260 is 62408580112.

It can be written as a sum of positive squares in 4 ways, for example, as 82296691876 + 128789112384 = 286874^2 + 358872^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2484379 + ... + 2567938.

It is an arithmetic number, because the mean of its divisors is an integer number (18478853085).

Almost surely, 2^211085804260 is an apocalyptic number.

211085804260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211085804260 is an abundant number, since it is smaller than the sum of its proper divisors (232406669780).

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

211085804260 is a wasteful number, since it uses less digits than its factorization.

211085804260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5054415 (or 5054413 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 37.

The spelling of 211085804260 in words is "two hundred eleven billion, eighty-five million, eight hundred four thousand, two hundred sixty".