66170412170 has 16 divisors (see below), whose sum is σ = 121640928768. Its totient is φ = 25905012240.

The previous prime is 66170412157. The next prime is 66170412181. The reversal of 66170412170 is 7121407166.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 66170412170.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70393586 + ... + 70394525.

It is an arithmetic number, because the mean of its divisors is an integer number (7602558048).

Almost surely, 2^66170412170 is an apocalyptic number.

66170412170 is a deficient number, since it is larger than the sum of its proper divisors (55470516598).

66170412170 is a wasteful number, since it uses less digits than its factorization.

66170412170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140788165.

The product of its (nonzero) digits is 14112, while the sum is 35.

The spelling of 66170412170 in words is "sixty-six billion, one hundred seventy million, four hundred twelve thousand, one hundred seventy".