256683315080535 has 64 divisors (see below), whose sum is σ = 471055678295040. Its totient is φ = 116918006768640.

The previous prime is 256683315080503. The next prime is 256683315080587. The reversal of 256683315080535 is 535080513386652.

It is not a de Polignac number, because 256683315080535 - 2⁵ = 256683315080503 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 684003864 + ... + 684379026.

It is an arithmetic number, because the mean of its divisors is an integer number (7360244973360).

Almost surely, 2^{256683315080535} is an apocalyptic number.

256683315080535 is a deficient number, since it is larger than the sum of its proper divisors (214372363214505).

256683315080535 is a wasteful number, since it uses less digits than its factorization.

256683315080535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398648.

The product of its (nonzero) digits is 77760000, while the sum is 60.

The spelling of 256683315080535 in words is "two hundred fifty-six trillion, six hundred eighty-three billion, three hundred fifteen million, eighty thousand, five hundred thirty-five".