66044444228 has 12 divisors (see below), whose sum is σ = 132088888512. Its totient is φ = 28304761800.

The previous prime is 66044444159. The next prime is 66044444231. The reversal of 66044444228 is 82244444066.

66044444228 is an admirable number.

It is a super-2 number, since 2×66044444228² (a number of 22 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

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, 1179365048 + ... + 1179365103.

It is an arithmetic number, because the mean of its divisors is an integer number (11007407376).

Almost surely, 2^66044444228 is an apocalyptic number.

It is an amenable number.

66044444228 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

66044444228 is a wasteful number, since it uses less digits than its factorization.

66044444228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2358730162 (or 2358730160 counting only the distinct ones).

The product of its (nonzero) digits is 1179648, while the sum is 44.

The spelling of 66044444228 in words is "sixty-six billion, forty-four million, four hundred forty-four thousand, two hundred twenty-eight".