255516061111 has 16 divisors (see below), whose sum is σ = 266237042400. Its totient is φ = 244925710848.

The previous prime is 255516061043. The next prime is 255516061147. The reversal of 255516061111 is 111160615552.

It is a cyclic number.

It is not a de Polignac number, because 255516061111 - 2¹⁵ = 255516028343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255516062111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4400355 + ... + 4458043.

It is an arithmetic number, because the mean of its divisors is an integer number (16639815150).

Almost surely, 2^255516061111 is an apocalyptic number.

255516061111 is a deficient number, since it is larger than the sum of its proper divisors (10720981289).

255516061111 is a wasteful number, since it uses less digits than its factorization.

255516061111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58818.

The product of its (nonzero) digits is 9000, while the sum is 34.

Adding to 255516061111 its reverse (111160615552), we get a palindrome (366676676663).

The spelling of 255516061111 in words is "two hundred fifty-five billion, five hundred sixteen million, sixty-one thousand, one hundred eleven".