256700555829 has 12 divisors (see below), whose sum is σ = 371822536800. Its totient is φ = 170657006184.

The previous prime is 256700555809. The next prime is 256700555843. The reversal of 256700555829 is 928555007652.

It is a happy number.

256700555829 is a `hidden beast` number, since 2 + 5 + 6 + 7 + 0 + 0 + 55 + 582 + 9 = 666.

256700555829 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 256700555829 - 2⁷ = 256700555701 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256700555809) 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 11 ways as a sum of consecutive naturals, for example, 39721399 + ... + 39727860.

It is an arithmetic number, because the mean of its divisors is an integer number (30985211400).

Almost surely, 2^256700555829 is an apocalyptic number.

It is an amenable number.

256700555829 is a deficient number, since it is larger than the sum of its proper divisors (115121980971).

256700555829 is a wasteful number, since it uses less digits than its factorization.

256700555829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79449624 (or 79449621 counting only the distinct ones).

The product of its (nonzero) digits is 7560000, while the sum is 54.

The spelling of 256700555829 in words is "two hundred fifty-six billion, seven hundred million, five hundred fifty-five thousand, eight hundred twenty-nine".