171212775152203 has 2 divisors, whose sum is σ = 171212775152204. Its totient is φ = 171212775152202.

The previous prime is 171212775152189. The next prime is 171212775152213. The reversal of 171212775152203 is 302251577212171.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-171212775152203 is a prime.

It is not a weakly prime, because it can be changed into another prime (171212775152213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85606387576101 + 85606387576102.

It is an arithmetic number, because the mean of its divisors is an integer number (85606387576102).

Almost surely, 2^{171212775152203} is an apocalyptic number.

171212775152203 is a deficient number, since it is larger than the sum of its proper divisors (1).

171212775152203 is an equidigital number, since it uses as much as digits as its factorization.

171212775152203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 411600, while the sum is 46.

The spelling of 171212775152203 in words is "one hundred seventy-one trillion, two hundred twelve billion, seven hundred seventy-five million, one hundred fifty-two thousand, two hundred three".