166582658087 has 2 divisors, whose sum is σ = 166582658088. Its totient is φ = 166582658086.

The previous prime is 166582658069. The next prime is 166582658089. The reversal of 166582658087 is 780856285661.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 166582658087 - 2¹⁰ = 166582657063 is a prime.

Together with 166582658089, 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 (166582658089) 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, 83291329043 + 83291329044.

It is an arithmetic number, because the mean of its divisors is an integer number (83291329044).

Almost surely, 2^166582658087 is an apocalyptic number.

166582658087 is a deficient number, since it is larger than the sum of its proper divisors (1).

166582658087 is an equidigital number, since it uses as much as digits as its factorization.

166582658087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38707200, while the sum is 62.

The spelling of 166582658087 in words is "one hundred sixty-six billion, five hundred eighty-two million, six hundred fifty-eight thousand, eighty-seven".