6165135857 has 2 divisors, whose sum is σ = 6165135858. Its totient is φ = 6165135856.

The previous prime is 6165135787. The next prime is 6165135863. The reversal of 6165135857 is 7585315616.

6165135857 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5763694561 + 401441296 = 75919^2 + 20036^2 .

It is a cyclic number.

It is not a de Polignac number, because 6165135857 - 2¹⁸ = 6164873713 is a prime.

It is not a weakly prime, because it can be changed into another prime (6165135887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3082567928 + 3082567929.

It is an arithmetic number, because the mean of its divisors is an integer number (3082567929).

Almost surely, 2^6165135857 is an apocalyptic number.

It is an amenable number.

6165135857 is a deficient number, since it is larger than the sum of its proper divisors (1).

6165135857 is an equidigital number, since it uses as much as digits as its factorization.

6165135857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 756000, while the sum is 47.

The square root of 6165135857 is about 78518.3791032393. The cubic root of 6165135857 is about 1833.6406028197.

The spelling of 6165135857 in words is "six billion, one hundred sixty-five million, one hundred thirty-five thousand, eight hundred fifty-seven".