57166541209 has 2 divisors, whose sum is σ = 57166541210. Its totient is φ = 57166541208.

The previous prime is 57166541191. The next prime is 57166541231. The reversal of 57166541209 is 90214566175.

57166541209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53617718025 + 3548823184 = 231555^2 + 59572^2 .

It is a cyclic number.

It is not a de Polignac number, because 57166541209 - 2¹⁷ = 57166410137 is a prime.

It is not a weakly prime, because it can be changed into another prime (57166541279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28583270604 + 28583270605.

It is an arithmetic number, because the mean of its divisors is an integer number (28583270605).

Almost surely, 2^57166541209 is an apocalyptic number.

It is an amenable number.

57166541209 is a deficient number, since it is larger than the sum of its proper divisors (1).

57166541209 is an equidigital number, since it uses as much as digits as its factorization.

57166541209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 453600, while the sum is 46.

The spelling of 57166541209 in words is "fifty-seven billion, one hundred sixty-six million, five hundred forty-one thousand, two hundred nine".