166366125586 has 8 divisors (see below), whose sum is σ = 249714347904. Its totient is φ = 83128009620.

The previous prime is 166366125559. The next prime is 166366125631. The reversal of 166366125586 is 685521663661.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27522810 + ... + 27528853.

It is an arithmetic number, because the mean of its divisors is an integer number (31214293488).

Almost surely, 2^166366125586 is an apocalyptic number.

166366125586 is a deficient number, since it is larger than the sum of its proper divisors (83348222318).

166366125586 is a wasteful number, since it uses less digits than its factorization.

166366125586 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55053176.

The product of its digits is 9331200, while the sum is 55.

The spelling of 166366125586 in words is "one hundred sixty-six billion, three hundred sixty-six million, one hundred twenty-five thousand, five hundred eighty-six".