255540544211 has 4 divisors (see below), whose sum is σ = 256031025624. Its totient is φ = 255050062800.

The previous prime is 255540544199. The next prime is 255540544247. The reversal of 255540544211 is 112445045552.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 255540544211 - 2²² = 255536349907 is a prime.

It is a super-2 number, since 2×255540544211² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (255540543211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 245239925 + ... + 245240966.

It is an arithmetic number, because the mean of its divisors is an integer number (64007756406).

Almost surely, 2^255540544211 is an apocalyptic number.

255540544211 is a deficient number, since it is larger than the sum of its proper divisors (490481413).

255540544211 is an equidigital number, since it uses as much as digits as its factorization.

255540544211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490481412.

The product of its (nonzero) digits is 160000, while the sum is 38.

Adding to 255540544211 its reverse (112445045552), we get a palindrome (367985589763).

The spelling of 255540544211 in words is "two hundred fifty-five billion, five hundred forty million, five hundred forty-four thousand, two hundred eleven".