66158485166 has 24 divisors (see below), whose sum is σ = 105712601040. Its totient is φ = 31046584832.

The previous prime is 66158485139. The next prime is 66158485181.

66158485166 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

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 in 11 ways as a sum of consecutive naturals, for example, 48086 + ... + 366918.

It is an arithmetic number, because the mean of its divisors is an integer number (4404691710).

Almost surely, 2^66158485166 is an apocalyptic number.

66158485166 is a deficient number, since it is larger than the sum of its proper divisors (39554115874).

66158485166 is a wasteful number, since it uses less digits than its factorization.

66158485166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319228 (or 319211 counting only the distinct ones).

The product of its digits is 8294400, while the sum is 56.

The spelling of 66158485166 in words is "sixty-six billion, one hundred fifty-eight million, four hundred eighty-five thousand, one hundred sixty-six".