171942274211 has 2 divisors, whose sum is σ = 171942274212. Its totient is φ = 171942274210.

The previous prime is 171942274199. The next prime is 171942274223. The reversal of 171942274211 is 112472249171.

It is a balanced prime because it is at equal distance from previous prime (171942274199) and next prime (171942274223).

It is an emirp because it is prime and its reverse (112472249171) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-171942274211 is a prime.

It is not a weakly prime, because it can be changed into another prime (171942274261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85971137105 + 85971137106.

It is an arithmetic number, because the mean of its divisors is an integer number (85971137106).

Almost surely, 2^171942274211 is an apocalyptic number.

171942274211 is a deficient number, since it is larger than the sum of its proper divisors (1).

171942274211 is an equidigital number, since it uses as much as digits as its factorization.

171942274211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 56448, while the sum is 41.

The spelling of 171942274211 in words is "one hundred seventy-one billion, nine hundred forty-two million, two hundred seventy-four thousand, two hundred eleven".