66844426170 has 32 divisors (see below), whose sum is σ = 161146040832. Its totient is φ = 17745244992.

The previous prime is 66844426163. The next prime is 66844426193. The reversal of 66844426170 is 7162444866.

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 15 ways as a sum of consecutive naturals, for example, 4989157 + ... + 5002536.

It is an arithmetic number, because the mean of its divisors is an integer number (5035813776).

Almost surely, 2^66844426170 is an apocalyptic number.

66844426170 is an abundant number, since it is smaller than the sum of its proper divisors (94301614662).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66844426170 is a wasteful number, since it uses less digits than its factorization.

66844426170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9991926.

The product of its (nonzero) digits is 1548288, while the sum is 48.

The spelling of 66844426170 in words is "sixty-six billion, eight hundred forty-four million, four hundred twenty-six thousand, one hundred seventy".