256278872652 has 72 divisors (see below), whose sum is σ = 657389795328. Its totient is φ = 77648266080.

The previous prime is 256278872639. The next prime is 256278872653.

256278872652 is nontrivially palindromic in base 10.

256278872652 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (256278872653) 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, 15334933 + ... + 15351635.

It is an arithmetic number, because the mean of its divisors is an integer number (9130413824).

Almost surely, 2^256278872652 is an apocalyptic number.

256278872652 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

256278872652 is an abundant number, since it is smaller than the sum of its proper divisors (401110922676).

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

256278872652 is a wasteful number, since it uses less digits than its factorization.

256278872652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27299 (or 27286 counting only the distinct ones).

The product of its digits is 45158400, while the sum is 60.

The spelling of 256278872652 in words is "two hundred fifty-six billion, two hundred seventy-eight million, eight hundred seventy-two thousand, six hundred fifty-two".