171212775676513 has 2 divisors, whose sum is σ = 171212775676514. Its totient is φ = 171212775676512.

The previous prime is 171212775676451. The next prime is 171212775676519. The reversal of 171212775676513 is 315676577212171.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 168667675532944 + 2545100143569 = 12987212^2 + 1595337^2 .

It is a cyclic number.

It is not a de Polignac number, because 171212775676513 - 2³³ = 171204185741921 is a prime.

It is not a weakly prime, because it can be changed into another prime (171212775676519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85606387838256 + 85606387838257.

It is an arithmetic number, because the mean of its divisors is an integer number (85606387838257).

Almost surely, 2^{171212775676513} is an apocalyptic number.

It is an amenable number.

171212775676513 is a deficient number, since it is larger than the sum of its proper divisors (1).

171212775676513 is an equidigital number, since it uses as much as digits as its factorization.

171212775676513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25930800, while the sum is 61.

The spelling of 171212775676513 in words is "one hundred seventy-one trillion, two hundred twelve billion, seven hundred seventy-five million, six hundred seventy-six thousand, five hundred thirteen".