68201578171 has 2 divisors, whose sum is σ = 68201578172. Its totient is φ = 68201578170.

The previous prime is 68201578147. The next prime is 68201578183. The reversal of 68201578171 is 17187510286.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68201578171 - 2⁵ = 68201578139 is a prime.

It is not a weakly prime, because it can be changed into another prime (68201578111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34100789085 + 34100789086.

It is an arithmetic number, because the mean of its divisors is an integer number (34100789086).

Almost surely, 2^68201578171 is an apocalyptic number.

68201578171 is a deficient number, since it is larger than the sum of its proper divisors (1).

68201578171 is an equidigital number, since it uses as much as digits as its factorization.

68201578171 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 188160, while the sum is 46.

The spelling of 68201578171 in words is "sixty-eight billion, two hundred one million, five hundred seventy-eight thousand, one hundred seventy-one".