166500606131 has 2 divisors, whose sum is σ = 166500606132. Its totient is φ = 166500606130.

The previous prime is 166500606043. The next prime is 166500606149. The reversal of 166500606131 is 131606005661.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 166500606131 - 2¹⁰ = 166500605107 is a prime.

It is a super-2 number, since 2×166500606131² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 166500606091 and 166500606100.

It is not a weakly prime, because it can be changed into another prime (166500603131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83250303065 + 83250303066.

It is an arithmetic number, because the mean of its divisors is an integer number (83250303066).

Almost surely, 2^166500606131 is an apocalyptic number.

166500606131 is a deficient number, since it is larger than the sum of its proper divisors (1).

166500606131 is an equidigital number, since it uses as much as digits as its factorization.

166500606131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19440, while the sum is 35.

The spelling of 166500606131 in words is "one hundred sixty-six billion, five hundred million, six hundred six thousand, one hundred thirty-one".