2057653868489 has 2 divisors, whose sum is σ = 2057653868490. Its totient is φ = 2057653868488.

The previous prime is 2057653868483. The next prime is 2057653868527. The reversal of 2057653868489 is 9848683567502.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1972802839225 + 84851029264 = 1404565^2 + 291292^2 .

It is a cyclic number.

It is not a de Polignac number, because 2057653868489 - 2³⁶ = 1988934391753 is a prime.

It is not a weakly prime, because it can be changed into another prime (2057653868483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1028826934244 + 1028826934245.

It is an arithmetic number, because the mean of its divisors is an integer number (1028826934245).

Almost surely, 2^{2057653868489} is an apocalyptic number.

It is an amenable number.

2057653868489 is a deficient number, since it is larger than the sum of its proper divisors (1).

2057653868489 is an equidigital number, since it uses as much as digits as its factorization.

2057653868489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 696729600, while the sum is 71.

The spelling of 2057653868489 in words is "two trillion, fifty-seven billion, six hundred fifty-three million, eight hundred sixty-eight thousand, four hundred eighty-nine".