57145842857 has 2 divisors, whose sum is σ = 57145842858. Its totient is φ = 57145842856.

The previous prime is 57145842829. The next prime is 57145842869. The reversal of 57145842857 is 75824854175.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56104554496 + 1041288361 = 236864^2 + 32269^2 .

It is a cyclic number.

It is not a de Polignac number, because 57145842857 - 2¹⁰ = 57145841833 is a prime.

It is not a weakly prime, because it can be changed into another prime (57145842877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28572921428 + 28572921429.

It is an arithmetic number, because the mean of its divisors is an integer number (28572921429).

Almost surely, 2^57145842857 is an apocalyptic number.

It is an amenable number.

57145842857 is a deficient number, since it is larger than the sum of its proper divisors (1).

57145842857 is an equidigital number, since it uses as much as digits as its factorization.

57145842857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12544000, while the sum is 56.

The spelling of 57145842857 in words is "fifty-seven billion, one hundred forty-five million, eight hundred forty-two thousand, eight hundred fifty-seven".