257386883471 has 2 divisors, whose sum is σ = 257386883472. Its totient is φ = 257386883470.

The previous prime is 257386883461. The next prime is 257386883477. The reversal of 257386883471 is 174388683752.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 257386883471 - 2³⁰ = 256313141647 is a prime.

It is a super-3 number, since 3×257386883471³ (a number of 35 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (257386883477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128693441735 + 128693441736.

It is an arithmetic number, because the mean of its divisors is an integer number (128693441736).

Almost surely, 2^257386883471 is an apocalyptic number.

257386883471 is a deficient number, since it is larger than the sum of its proper divisors (1).

257386883471 is an equidigital number, since it uses as much as digits as its factorization.

257386883471 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54190080, while the sum is 62.

The spelling of 257386883471 in words is "two hundred fifty-seven billion, three hundred eighty-six million, eight hundred eighty-three thousand, four hundred seventy-one".