256613101743255 has 8 divisors (see below), whose sum is σ = 410580962789232. Its totient is φ = 136860320929728.

The previous prime is 256613101743233. The next prime is 256613101743259. The reversal of 256613101743255 is 552347101316652.

256613101743255 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 256613101743255 - 2¹⁷ = 256613101612183 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 256613101743198 and 256613101743207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256613101743259) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8553770058094 + ... + 8553770058123.

It is an arithmetic number, because the mean of its divisors is an integer number (51322620348654).

Almost surely, 2^{256613101743255} is an apocalyptic number.

256613101743255 is a deficient number, since it is larger than the sum of its proper divisors (153967861045977).

256613101743255 is a wasteful number, since it uses less digits than its factorization.

256613101743255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17107540116225.

The product of its (nonzero) digits is 4536000, while the sum is 51.

The spelling of 256613101743255 in words is "two hundred fifty-six trillion, six hundred thirteen billion, one hundred one million, seven hundred forty-three thousand, two hundred fifty-five".