256277563434 has 48 divisors (see below), whose sum is σ = 581070672000. Its totient is φ = 81477510048.

The previous prime is 256277563433. The next prime is 256277563453. The reversal of 256277563434 is 434365772652.

256277563434 is a `hidden beast` number, since 2 + 5 + 6 + 2 + 77 + 563 + 4 + 3 + 4 = 666.

256277563434 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (256277563433) 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 23 ways as a sum of consecutive naturals, for example, 742374 + ... + 1031345.

It is an arithmetic number, because the mean of its divisors is an integer number (12105639000).

Almost surely, 2^256277563434 is an apocalyptic number.

256277563434 is an abundant number, since it is smaller than the sum of its proper divisors (324793108566).

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

256277563434 is a wasteful number, since it uses less digits than its factorization.

256277563434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1774099 (or 1774096 counting only the distinct ones).

The product of its digits is 25401600, while the sum is 54.

The spelling of 256277563434 in words is "two hundred fifty-six billion, two hundred seventy-seven million, five hundred sixty-three thousand, four hundred thirty-four".