66187104446 has 8 divisors (see below), whose sum is σ = 99392587920. Its totient is φ = 33056241808.

The previous prime is 66187104443. The next prime is 66187104491. The reversal of 66187104446 is 64440178166.

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

It is a self number, because there is not a number n which added to its sum of digits gives 66187104446.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66187104443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18652991 + ... + 18656538.

It is an arithmetic number, because the mean of its divisors is an integer number (12424073490).

Almost surely, 2^66187104446 is an apocalyptic number.

66187104446 is a deficient number, since it is larger than the sum of its proper divisors (33205483474).

66187104446 is a wasteful number, since it uses less digits than its factorization.

66187104446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37310418.

The product of its (nonzero) digits is 774144, while the sum is 47.

The spelling of 66187104446 in words is "sixty-six billion, one hundred eighty-seven million, one hundred four thousand, four hundred forty-six".