256035408571842 has 16 divisors (see below), whose sum is σ = 512587538464512. Its totient is φ = 85259015970480.

The previous prime is 256035408571769. The next prime is 256035408571861. The reversal of 256035408571842 is 248175804530652.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21530048593 + ... + 21530060484.

It is an arithmetic number, because the mean of its divisors is an integer number (32036721154032).

Almost surely, 2^{256035408571842} is an apocalyptic number.

256035408571842 is an abundant number, since it is smaller than the sum of its proper divisors (256552129892670).

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

256035408571842 is a wasteful number, since it uses less digits than its factorization.

256035408571842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43060110073.

The product of its (nonzero) digits is 64512000, while the sum is 60.

The spelling of 256035408571842 in words is "two hundred fifty-six trillion, thirty-five billion, four hundred eight million, five hundred seventy-one thousand, eight hundred forty-two".