256011030566 has 16 divisors (see below), whose sum is σ = 384880779360. Its totient is φ = 127717754880.

The previous prime is 256011030547. The next prime is 256011030577. The reversal of 256011030566 is 665030110652.

256011030566 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1553375 + ... + 1710261.

It is an arithmetic number, because the mean of its divisors is an integer number (24055048710).

Almost surely, 2^256011030566 is an apocalyptic number.

256011030566 is a deficient number, since it is larger than the sum of its proper divisors (128869748794).

256011030566 is a wasteful number, since it uses less digits than its factorization.

256011030566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158719.

The product of its (nonzero) digits is 32400, while the sum is 35.

The spelling of 256011030566 in words is "two hundred fifty-six billion, eleven million, thirty thousand, five hundred sixty-six".