57043345549 has 2 divisors, whose sum is σ = 57043345550. Its totient is φ = 57043345548.

The previous prime is 57043345543. The next prime is 57043345561. The reversal of 57043345549 is 94554334075.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56774975625 + 268369924 = 238275^2 + 16382^2 .

It is a cyclic number.

It is not a de Polignac number, because 57043345549 - 2²⁹ = 56506474637 is a prime.

It is a super-2 number, since 2×57043345549² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57043345543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28521672774 + 28521672775.

It is an arithmetic number, because the mean of its divisors is an integer number (28521672775).

Almost surely, 2^57043345549 is an apocalyptic number.

It is an amenable number.

57043345549 is a deficient number, since it is larger than the sum of its proper divisors (1).

57043345549 is an equidigital number, since it uses as much as digits as its factorization.

57043345549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536000, while the sum is 49.

The spelling of 57043345549 in words is "fifty-seven billion, forty-three million, three hundred forty-five thousand, five hundred forty-nine".