1657716818113 has 2 divisors, whose sum is σ = 1657716818114. Its totient is φ = 1657716818112.

The previous prime is 1657716818057. The next prime is 1657716818143. The reversal of 1657716818113 is 3118186177561.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1095084810369 + 562632007744 = 1046463^2 + 750088^2 .

It is a cyclic number.

It is not a de Polignac number, because 1657716818113 - 2³⁷ = 1520277864641 is a prime.

It is not a weakly prime, because it can be changed into another prime (1657716818143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 828858409056 + 828858409057.

It is an arithmetic number, because the mean of its divisors is an integer number (828858409057).

Almost surely, 2^{1657716818113} is an apocalyptic number.

It is an amenable number.

1657716818113 is a deficient number, since it is larger than the sum of its proper divisors (1).

1657716818113 is an equidigital number, since it uses as much as digits as its factorization.

1657716818113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1693440, while the sum is 55.

The spelling of 1657716818113 in words is "one trillion, six hundred fifty-seven billion, seven hundred sixteen million, eight hundred eighteen thousand, one hundred thirteen".