256006416191 has 2 divisors, whose sum is σ = 256006416192. Its totient is φ = 256006416190.

The previous prime is 256006416187. The next prime is 256006416217. The reversal of 256006416191 is 191614600652.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 256006416191 - 2² = 256006416187 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (256006419191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128003208095 + 128003208096.

It is an arithmetic number, because the mean of its divisors is an integer number (128003208096).

Almost surely, 2^256006416191 is an apocalyptic number.

256006416191 is a deficient number, since it is larger than the sum of its proper divisors (1).

256006416191 is an equidigital number, since it uses as much as digits as its factorization.

256006416191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 77760, while the sum is 41.

The spelling of 256006416191 in words is "two hundred fifty-six billion, six million, four hundred sixteen thousand, one hundred ninety-one".