256500430574141 has 4 divisors (see below), whose sum is σ = 276231232926012. Its totient is φ = 236769628222272.

The previous prime is 256500430574033. The next prime is 256500430574159. The reversal of 256500430574141 is 141475034005652.

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 41333455392100 + 215166975182041 = 6429110^2 + 14668571^2 .

It is a cyclic number.

It is not a de Polignac number, because 256500430574141 - 2³⁸ = 256225552667197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256500430564141) 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, 9865401175916 + ... + 9865401175941.

It is an arithmetic number, because the mean of its divisors is an integer number (69057808231503).

Almost surely, 2^{256500430574141} is an apocalyptic number.

It is an amenable number.

256500430574141 is a deficient number, since it is larger than the sum of its proper divisors (19730802351871).

256500430574141 is a wasteful number, since it uses less digits than its factorization.

256500430574141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19730802351870.

The product of its (nonzero) digits is 2016000, while the sum is 47.

Adding to 256500430574141 its reverse (141475034005652), we get a palindrome (397975464579793).

The spelling of 256500430574141 in words is "two hundred fifty-six trillion, five hundred billion, four hundred thirty million, five hundred seventy-four thousand, one hundred forty-one".