257068977527 has 2 divisors, whose sum is σ = 257068977528. Its totient is φ = 257068977526.

The previous prime is 257068977421. The next prime is 257068977533. The reversal of 257068977527 is 725779860752.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 257068977527 - 2¹² = 257068973431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (257068977227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128534488763 + 128534488764.

It is an arithmetic number, because the mean of its divisors is an integer number (128534488764).

Almost surely, 2^257068977527 is an apocalyptic number.

257068977527 is a deficient number, since it is larger than the sum of its proper divisors (1).

257068977527 is an equidigital number, since it uses as much as digits as its factorization.

257068977527 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 103723200, while the sum is 65.

The spelling of 257068977527 in words is "two hundred fifty-seven billion, sixty-eight million, nine hundred seventy-seven thousand, five hundred twenty-seven".