256055335613 has 16 divisors (see below), whose sum is σ = 319393516416. Its totient is φ = 199426328640.

The previous prime is 256055335607. The next prime is 256055335619. The reversal of 256055335613 is 316533550652.

It is an interprime number because it is at equal distance from previous prime (256055335607) and next prime (256055335619).

It is not a de Polignac number, because 256055335613 - 2²⁸ = 255786900157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256055335619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 651806 + ... + 967967.

It is an arithmetic number, because the mean of its divisors is an integer number (19962094776).

Almost surely, 2^256055335613 is an apocalyptic number.

It is an amenable number.

256055335613 is a deficient number, since it is larger than the sum of its proper divisors (63338180803).

256055335613 is a wasteful number, since it uses less digits than its factorization.

256055335613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1621844.

The product of its (nonzero) digits is 1215000, while the sum is 44.

The spelling of 256055335613 in words is "two hundred fifty-six billion, fifty-five million, three hundred thirty-five thousand, six hundred thirteen".