166512371 has 8 divisors (see below), whose sum is σ = 178150800. Its totient is φ = 155161440.

The previous prime is 166512361. The next prime is 166512373. The reversal of 166512371 is 173215661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 166512371 - 2¹⁰ = 166511347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166512373) 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 in 7 ways as a sum of consecutive naturals, for example, 70676 + ... + 72993.

It is an arithmetic number, because the mean of its divisors is an integer number (22268850).

Almost surely, 2^166512371 is an apocalyptic number.

166512371 is a deficient number, since it is larger than the sum of its proper divisors (11638429).

166512371 is a wasteful number, since it uses less digits than its factorization.

166512371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143749.

The product of its digits is 7560, while the sum is 32.

The square root of 166512371 is about 12903.9672581730. The cubic root of 166512371 is about 550.1513313604.

The spelling of 166512371 in words is "one hundred sixty-six million, five hundred twelve thousand, three hundred seventy-one".