256046746771 has 16 divisors (see below), whose sum is σ = 263658780000. Its totient is φ = 248551243776.

The previous prime is 256046746757. The next prime is 256046746777. The reversal of 256046746771 is 177647640652.

It is a cyclic number.

It is not a de Polignac number, because 256046746771 - 2²⁵ = 256013192339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256046746777) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4006315 + ... + 4069723.

It is an arithmetic number, because the mean of its divisors is an integer number (16478673750).

Almost surely, 2^256046746771 is an apocalyptic number.

256046746771 is a deficient number, since it is larger than the sum of its proper divisors (7612033229).

256046746771 is an equidigital number, since it uses as much as digits as its factorization.

256046746771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64326.

The product of its (nonzero) digits is 11854080, while the sum is 55.

The spelling of 256046746771 in words is "two hundred fifty-six billion, forty-six million, seven hundred forty-six thousand, seven hundred seventy-one".