166515016 has 8 divisors (see below), whose sum is σ = 312215670. Its totient is φ = 83257504.

The previous prime is 166515007. The next prime is 166515023. The reversal of 166515016 is 610515661.

It can be written as a sum of positive squares in only one way, i.e., 118156900 + 48358116 = 10870^2 + 6954^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10407181 + ... + 10407196.

Almost surely, 2^166515016 is an apocalyptic number.

It is an amenable number.

166515016 is a deficient number, since it is larger than the sum of its proper divisors (145700654).

166515016 is a wasteful number, since it uses less digits than its factorization.

166515016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20814383 (or 20814379 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 166515016 is about 12904.0697456268. The cubic root of 166515016 is about 550.1542443423.

The spelling of 166515016 in words is "one hundred sixty-six million, five hundred fifteen thousand, sixteen".