66041318798 has 32 divisors (see below), whose sum is σ = 122147981760. Its totient is φ = 26077904640.

The previous prime is 66041318779. The next prime is 66041318839. The reversal of 66041318798 is 89781314066.

It is a super-2 number, since 2×66041318798² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 236903 + ... + 433826.

It is an arithmetic number, because the mean of its divisors is an integer number (3817124430).

Almost surely, 2^66041318798 is an apocalyptic number.

66041318798 is a deficient number, since it is larger than the sum of its proper divisors (56106662962).

66041318798 is a wasteful number, since it uses less digits than its factorization.

66041318798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 671292.

The product of its (nonzero) digits is 1741824, while the sum is 53.

The spelling of 66041318798 in words is "sixty-six billion, forty-one million, three hundred eighteen thousand, seven hundred ninety-eight".