57827857117 has 2 divisors, whose sum is σ = 57827857118. Its totient is φ = 57827857116.

The previous prime is 57827857097. The next prime is 57827857163. The reversal of 57827857117 is 71175872875.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32280949561 + 25546907556 = 179669^2 + 159834^2 .

It is a cyclic number.

It is not a de Polignac number, because 57827857117 - 2³⁵ = 23468118749 is a prime.

It is a super-2 number, since 2×57827857117² (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 (57827857187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28913928558 + 28913928559.

It is an arithmetic number, because the mean of its divisors is an integer number (28913928559).

Almost surely, 2^57827857117 is an apocalyptic number.

It is an amenable number.

57827857117 is a deficient number, since it is larger than the sum of its proper divisors (1).

57827857117 is an equidigital number, since it uses as much as digits as its factorization.

57827857117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7683200, while the sum is 58.

The spelling of 57827857117 in words is "fifty-seven billion, eight hundred twenty-seven million, eight hundred fifty-seven thousand, one hundred seventeen".