256255802068 has 48 divisors (see below), whose sum is σ = 521045650944. Its totient is φ = 107996106240.

The previous prime is 256255802057. The next prime is 256255802083. The reversal of 256255802068 is 860208552652.

256255802068 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 15 ways as a sum of consecutive naturals, for example, 7605996 + ... + 7639612.

It is an arithmetic number, because the mean of its divisors is an integer number (10855117728).

Almost surely, 2^256255802068 is an apocalyptic number.

256255802068 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

256255802068 is an abundant number, since it is smaller than the sum of its proper divisors (264789848876).

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

256255802068 is a wasteful number, since it uses less digits than its factorization.

256255802068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38152 (or 38150 counting only the distinct ones).

The product of its (nonzero) digits is 2304000, while the sum is 49.

The spelling of 256255802068 in words is "two hundred fifty-six billion, two hundred fifty-five million, eight hundred two thousand, sixty-eight".