256080230287 has 4 divisors (see below), whose sum is σ = 292663120336. Its totient is φ = 219497340240.

The previous prime is 256080230281. The next prime is 256080230323. The reversal of 256080230287 is 782032080652.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-256080230287 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 (256080230281) 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, 18291445014 + ... + 18291445027.

It is an arithmetic number, because the mean of its divisors is an integer number (73165780084).

Almost surely, 2^256080230287 is an apocalyptic number.

256080230287 is a deficient number, since it is larger than the sum of its proper divisors (36582890049).

256080230287 is an equidigital number, since it uses as much as digits as its factorization.

256080230287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36582890048.

The product of its (nonzero) digits is 322560, while the sum is 43.

The spelling of 256080230287 in words is "two hundred fifty-six billion, eighty million, two hundred thirty thousand, two hundred eighty-seven".