57456569393 has 2 divisors, whose sum is σ = 57456569394. Its totient is φ = 57456569392.

The previous prime is 57456569371. The next prime is 57456569407. The reversal of 57456569393 is 39396565475.

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., 57438353569 + 18215824 = 239663^2 + 4268^2 .

It is a cyclic number.

It is not a de Polignac number, because 57456569393 - 2¹² = 57456565297 is a prime.

It is not a weakly prime, because it can be changed into another prime (57456569333) 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, 28728284696 + 28728284697.

It is an arithmetic number, because the mean of its divisors is an integer number (28728284697).

Almost surely, 2^57456569393 is an apocalyptic number.

It is an amenable number.

57456569393 is a deficient number, since it is larger than the sum of its proper divisors (1).

57456569393 is an equidigital number, since it uses as much as digits as its factorization.

57456569393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 91854000, while the sum is 62.

The spelling of 57456569393 in words is "fifty-seven billion, four hundred fifty-six million, five hundred sixty-nine thousand, three hundred ninety-three".