166295343587 has 2 divisors, whose sum is σ = 166295343588. Its totient is φ = 166295343586.

The previous prime is 166295343581. The next prime is 166295343601. The reversal of 166295343587 is 785343592661.

It is a weak prime.

It is an emirp because it is prime and its reverse (785343592661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 166295343587 - 2¹⁸ = 166295081443 is a prime.

It is not a weakly prime, because it can be changed into another prime (166295343581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83147671793 + 83147671794.

It is an arithmetic number, because the mean of its divisors is an integer number (83147671794).

Almost surely, 2^166295343587 is an apocalyptic number.

166295343587 is a deficient number, since it is larger than the sum of its proper divisors (1).

166295343587 is an equidigital number, since it uses as much as digits as its factorization.

166295343587 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32659200, while the sum is 59.

The spelling of 166295343587 in words is "one hundred sixty-six billion, two hundred ninety-five million, three hundred forty-three thousand, five hundred eighty-seven".