57145538269 has 2 divisors, whose sum is σ = 57145538270. Its totient is φ = 57145538268.

The previous prime is 57145538249. The next prime is 57145538279. The reversal of 57145538269 is 96283554175.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34746824025 + 22398714244 = 186405^2 + 149662^2 .

It is a cyclic number.

It is not a de Polignac number, because 57145538269 - 2¹¹ = 57145536221 is a prime.

It is a super-2 number, since 2×57145538269² (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 (57145538209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28572769134 + 28572769135.

It is an arithmetic number, because the mean of its divisors is an integer number (28572769135).

Almost surely, 2^57145538269 is an apocalyptic number.

It is an amenable number.

57145538269 is a deficient number, since it is larger than the sum of its proper divisors (1).

57145538269 is an equidigital number, since it uses as much as digits as its factorization.

57145538269 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9072000, while the sum is 55.

The spelling of 57145538269 in words is "fifty-seven billion, one hundred forty-five million, five hundred thirty-eight thousand, two hundred sixty-nine".