171437543125061 has 2 divisors, whose sum is σ = 171437543125062. Its totient is φ = 171437543125060.

The previous prime is 171437543125033. The next prime is 171437543125063. The reversal of 171437543125061 is 160521345734171.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 129550629684961 + 41886913440100 = 11382031^2 + 6472010^2 .

It is a cyclic number.

It is not a de Polignac number, because 171437543125061 - 2¹⁴ = 171437543108677 is a prime.

Together with 171437543125063, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (171437543125063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85718771562530 + 85718771562531.

It is an arithmetic number, because the mean of its divisors is an integer number (85718771562531).

Almost surely, 2^{171437543125061} is an apocalyptic number.

It is an amenable number.

171437543125061 is a deficient number, since it is larger than the sum of its proper divisors (1).

171437543125061 is an equidigital number, since it uses as much as digits as its factorization.

171437543125061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2116800, while the sum is 50.

The spelling of 171437543125061 in words is "one hundred seventy-one trillion, four hundred thirty-seven billion, five hundred forty-three million, one hundred twenty-five thousand, sixty-one".