256316220052999 has 2 divisors, whose sum is σ = 256316220053000. Its totient is φ = 256316220052998.

The previous prime is 256316220052993. The next prime is 256316220053021. The reversal of 256316220052999 is 999250022613652.

It is a happy number.

256316220052999 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 256316220052999 - 2⁴¹ = 254117196797447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (256316220052993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128158110026499 + 128158110026500.

It is an arithmetic number, because the mean of its divisors is an integer number (128158110026500).

Almost surely, 2^{256316220052999} is an apocalyptic number.

256316220052999 is a deficient number, since it is larger than the sum of its proper divisors (1).

256316220052999 is an equidigital number, since it uses as much as digits as its factorization.

256316220052999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31492800, while the sum is 61.

The spelling of 256316220052999 in words is "two hundred fifty-six trillion, three hundred sixteen billion, two hundred twenty million, fifty-two thousand, nine hundred ninety-nine".