166161710375 has 16 divisors (see below), whose sum is σ = 207996361248. Its totient is φ = 132527736000.

The previous prime is 166161710353. The next prime is 166161710417. The reversal of 166161710375 is 573017161661.

It is not a de Polignac number, because 166161710375 - 2⁸ = 166161710119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 1966622 + ... + 2049371.

It is an arithmetic number, because the mean of its divisors is an integer number (12999772578).

Almost surely, 2^166161710375 is an apocalyptic number.

166161710375 is a deficient number, since it is larger than the sum of its proper divisors (41834650873).

166161710375 is an equidigital number, since it uses as much as digits as its factorization.

166161710375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4016339 (or 4016329 counting only the distinct ones).

The product of its (nonzero) digits is 158760, while the sum is 44.

The spelling of 166161710375 in words is "one hundred sixty-six billion, one hundred sixty-one million, seven hundred ten thousand, three hundred seventy-five".