66044800408844 has 12 divisors (see below), whose sum is σ = 115578585070704. Its totient is φ = 33022347531504.

The previous prime is 66044800408841. The next prime is 66044800408849. The reversal of 66044800408844 is 44880400844066.

It is a super-2 number, since 2×66044800408844² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 66044800408844.

It is not an unprimeable number, because it can be changed into a prime (66044800408841) 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, 10276472 + ... + 15417375.

It is an arithmetic number, because the mean of its divisors is an integer number (9631548755892).

Almost surely, 2^{66044800408844} is an apocalyptic number.

It is an amenable number.

66044800408844 is a deficient number, since it is larger than the sum of its proper divisors (49533784661860).

66044800408844 is a wasteful number, since it uses less digits than its factorization.

66044800408844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26336464 (or 26336462 counting only the distinct ones).

The product of its (nonzero) digits is 18874368, while the sum is 56.

The spelling of 66044800408844 in words is "sixty-six trillion, forty-four billion, eight hundred million, four hundred eight thousand, eight hundred forty-four".