256441451211 has 12 divisors (see below), whose sum is σ = 404089559640. Its totient is φ = 155419061280.

The previous prime is 256441451207. The next prime is 256441451213. The reversal of 256441451211 is 112154144652.

256441451211 is a `hidden beast` number, since 2 + 5 + 644 + 1 + 4 + 5 + 1 + 2 + 1 + 1 = 666.

256441451211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 256441451211 - 2² = 256441451207 is a prime.

It is not an unprimeable number, because it can be changed into a prime (256441451213) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 1295158746 + ... + 1295158943.

It is an arithmetic number, because the mean of its divisors is an integer number (33674129970).

Almost surely, 2^256441451211 is an apocalyptic number.

256441451211 is a deficient number, since it is larger than the sum of its proper divisors (147648108429).

256441451211 is a wasteful number, since it uses less digits than its factorization.

256441451211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2590317706 (or 2590317703 counting only the distinct ones).

The product of its digits is 38400, while the sum is 36.

Adding to 256441451211 its reverse (112154144652), we get a palindrome (368595595863).

The spelling of 256441451211 in words is "two hundred fifty-six billion, four hundred forty-one million, four hundred fifty-one thousand, two hundred eleven".