66170020586 has 8 divisors (see below), whose sum is σ = 99257293344. Its totient is φ = 33084256140.

The previous prime is 66170020571. The next prime is 66170020603. The reversal of 66170020586 is 68502007166.

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

It is a Curzon 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 3 ways as a sum of consecutive naturals, for example, 260150 + ... + 447233.

It is an arithmetic number, because the mean of its divisors is an integer number (12407161668).

Almost surely, 2^66170020586 is an apocalyptic number.

66170020586 is a deficient number, since it is larger than the sum of its proper divisors (33087272758).

66170020586 is a wasteful number, since it uses less digits than its factorization.

66170020586 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 754156.

The product of its (nonzero) digits is 120960, while the sum is 41.

It can be divided in two parts, 661700 and 20586, that added together give a palindrome (682286).

The spelling of 66170020586 in words is "sixty-six billion, one hundred seventy million, twenty thousand, five hundred eighty-six".