256455242344 has 48 divisors (see below), whose sum is σ = 583680319200. Its totient is φ = 105130716768.

The previous prime is 256455242273. The next prime is 256455242383. The reversal of 256455242344 is 443242554652.

256455242344 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×256455242344² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a junction number, because it is equal to n+sod(n) for n = 256455242294 and 256455242303.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14213214 + ... + 14231245.

It is an arithmetic number, because the mean of its divisors is an integer number (12160006650).

Almost surely, 2^256455242344 is an apocalyptic number.

It is an amenable number.

256455242344 is an abundant number, since it is smaller than the sum of its proper divisors (327225076856).

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

256455242344 is a wasteful number, since it uses less digits than its factorization.

256455242344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28444502 (or 28444491 counting only the distinct ones).

The product of its digits is 4608000, while the sum is 46.

Adding to 256455242344 its reverse (443242554652), we get a palindrome (699697796996).

The spelling of 256455242344 in words is "two hundred fifty-six billion, four hundred fifty-five million, two hundred forty-two thousand, three hundred forty-four".