166702051667 has 4 divisors (see below), whose sum is σ = 175475843880. Its totient is φ = 157928259456.

The previous prime is 166702051639. The next prime is 166702051717. The reversal of 166702051667 is 766150207661.

166702051667 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 166702051667 - 2¹² = 166702047571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166702050667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4386896078 + ... + 4386896115.

It is an arithmetic number, because the mean of its divisors is an integer number (43868960970).

Almost surely, 2^166702051667 is an apocalyptic number.

166702051667 is a deficient number, since it is larger than the sum of its proper divisors (8773792213).

166702051667 is an equidigital number, since it uses as much as digits as its factorization.

166702051667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8773792212.

The product of its (nonzero) digits is 635040, while the sum is 47.

The spelling of 166702051667 in words is "one hundred sixty-six billion, seven hundred two million, fifty-one thousand, six hundred sixty-seven".