257616130226879 has 2 divisors, whose sum is σ = 257616130226880. Its totient is φ = 257616130226878.

The previous prime is 257616130226867. The next prime is 257616130226911. The reversal of 257616130226879 is 978622031616752.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 257616130226879 - 2²⁸ = 257615861791423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (257616130226479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128808065113439 + 128808065113440.

It is an arithmetic number, because the mean of its divisors is an integer number (128808065113440).

Almost surely, 2^{257616130226879} is an apocalyptic number.

257616130226879 is a deficient number, since it is larger than the sum of its proper divisors (1).

257616130226879 is an equidigital number, since it uses as much as digits as its factorization.

257616130226879 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 91445760, while the sum is 65.

The spelling of 257616130226879 in words is "two hundred fifty-seven trillion, six hundred sixteen billion, one hundred thirty million, two hundred twenty-six thousand, eight hundred seventy-nine".