256588454068 has 12 divisors (see below), whose sum is σ = 449335059712. Its totient is φ = 128207008440.

The previous prime is 256588454047. The next prime is 256588454069. The reversal of 256588454068 is 860454885652.

It is a super-2 number, since 2×256588454068² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 256588453997 and 256588454015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256588454069) 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, 21798030 + ... + 21809797.

Almost surely, 2^256588454068 is an apocalyptic number.

It is an amenable number.

256588454068 is a deficient number, since it is larger than the sum of its proper divisors (192746605644).

256588454068 is a wasteful number, since it uses less digits than its factorization.

256588454068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43609302 (or 43609300 counting only the distinct ones).

The product of its (nonzero) digits is 73728000, while the sum is 61.

The spelling of 256588454068 in words is "two hundred fifty-six billion, five hundred eighty-eight million, four hundred fifty-four thousand, sixty-eight".