57086744767993 has 2 divisors, whose sum is σ = 57086744767994. Its totient is φ = 57086744767992.

The previous prime is 57086744767981. The next prime is 57086744768017. The reversal of 57086744767993 is 39976744768075.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46336923537129 + 10749821230864 = 6807123^2 + 3278692^2 .

It is a cyclic number.

It is not a de Polignac number, because 57086744767993 - 2⁵ = 57086744767961 is a prime.

It is not a weakly prime, because it can be changed into another prime (57086744767933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28543372383996 + 28543372383997.

It is an arithmetic number, because the mean of its divisors is an integer number (28543372383997).

Almost surely, 2^{57086744767993} is an apocalyptic number.

It is an amenable number.

57086744767993 is a deficient number, since it is larger than the sum of its proper divisors (1).

57086744767993 is an equidigital number, since it uses as much as digits as its factorization.

57086744767993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13442526720, while the sum is 82.

Adding to 57086744767993 its sum of digits (82), we get a palindrome (57086744768075).

The spelling of 57086744767993 in words is "fifty-seven trillion, eighty-six billion, seven hundred forty-four million, seven hundred sixty-seven thousand, nine hundred ninety-three".