256006675541 has 4 divisors (see below), whose sum is σ = 256393978284. Its totient is φ = 255619372800.

The previous prime is 256006675481. The next prime is 256006675559. The reversal of 256006675541 is 145576600652.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 71545015441 + 184461660100 = 267479^2 + 429490^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-256006675541 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 (256006675591) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 193650380 + ... + 193651701.

It is an arithmetic number, because the mean of its divisors is an integer number (64098494571).

Almost surely, 2^256006675541 is an apocalyptic number.

It is an amenable number.

256006675541 is a deficient number, since it is larger than the sum of its proper divisors (387302743).

256006675541 is an equidigital number, since it uses as much as digits as its factorization.

256006675541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387302742.

The product of its (nonzero) digits is 1512000, while the sum is 47.

The spelling of 256006675541 in words is "two hundred fifty-six billion, six million, six hundred seventy-five thousand, five hundred forty-one".