166586158423 has 2 divisors, whose sum is σ = 166586158424. Its totient is φ = 166586158422.

The previous prime is 166586158411. The next prime is 166586158493. The reversal of 166586158423 is 324851685661.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 166586158423 - 2²¹ = 166584061271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166586158493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83293079211 + 83293079212.

It is an arithmetic number, because the mean of its divisors is an integer number (83293079212).

Almost surely, 2^166586158423 is an apocalyptic number.

166586158423 is a deficient number, since it is larger than the sum of its proper divisors (1).

166586158423 is an equidigital number, since it uses as much as digits as its factorization.

166586158423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8294400, while the sum is 55.

The spelling of 166586158423 in words is "one hundred sixty-six billion, five hundred eighty-six million, one hundred fifty-eight thousand, four hundred twenty-three".