166722748574143 has 2 divisors, whose sum is σ = 166722748574144. Its totient is φ = 166722748574142.

The previous prime is 166722748574113. The next prime is 166722748574191. The reversal of 166722748574143 is 341475847227661.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 166722748574143 - 2⁹ = 166722748573631 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166722748574113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83361374287071 + 83361374287072.

It is an arithmetic number, because the mean of its divisors is an integer number (83361374287072).

Almost surely, 2^{166722748574143} is an apocalyptic number.

166722748574143 is a deficient number, since it is larger than the sum of its proper divisors (1).

166722748574143 is an equidigital number, since it uses as much as digits as its factorization.

166722748574143 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 379330560, while the sum is 67.

The spelling of 166722748574143 in words is "one hundred sixty-six trillion, seven hundred twenty-two billion, seven hundred forty-eight million, five hundred seventy-four thousand, one hundred forty-three".