2164656281057 has 2 divisors, whose sum is σ = 2164656281058. Its totient is φ = 2164656281056.

The previous prime is 2164656281041. The next prime is 2164656281071. The reversal of 2164656281057 is 7501826564612.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1356570348961 + 808085932096 = 1164719^2 + 898936^2 .

It is a cyclic number.

It is not a de Polignac number, because 2164656281057 - 2⁴ = 2164656281041 is a prime.

It is not a weakly prime, because it can be changed into another prime (2164656281257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1082328140528 + 1082328140529.

It is an arithmetic number, because the mean of its divisors is an integer number (1082328140529).

Almost surely, 2^{2164656281057} is an apocalyptic number.

It is an amenable number.

2164656281057 is a deficient number, since it is larger than the sum of its proper divisors (1).

2164656281057 is an equidigital number, since it uses as much as digits as its factorization.

2164656281057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4838400, while the sum is 53.

The spelling of 2164656281057 in words is "two trillion, one hundred sixty-four billion, six hundred fifty-six million, two hundred eighty-one thousand, fifty-seven".