256216144111 has 4 divisors (see below), whose sum is σ = 256218074224. Its totient is φ = 256214214000.

The previous prime is 256216144091. The next prime is 256216144133. The reversal of 256216144111 is 111441612652.

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 256216144111 - 2⁷ = 256216143983 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 (256216124111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 749955 + ... + 1036756.

It is an arithmetic number, because the mean of its divisors is an integer number (64054518556).

Almost surely, 2^256216144111 is an apocalyptic number.

256216144111 is a deficient number, since it is larger than the sum of its proper divisors (1930113).

256216144111 is a wasteful number, since it uses less digits than its factorization.

256216144111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1930112.

The product of its digits is 11520, while the sum is 34.

Adding to 256216144111 its reverse (111441612652), we get a palindrome (367657756763).

The spelling of 256216144111 in words is "two hundred fifty-six billion, two hundred sixteen million, one hundred forty-four thousand, one hundred eleven".