66673400734068 has 24 divisors (see below), whose sum is σ = 155663159311968. Its totient is φ = 22211339635296.

The previous prime is 66673400734019. The next prime is 66673400734093. The reversal of 66673400734068 is 86043700437666.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1640888346 + ... + 1640928977.

It is an arithmetic number, because the mean of its divisors is an integer number (6485964971332).

Almost surely, 2^{66673400734068} is an apocalyptic number.

It is an amenable number.

66673400734068 is an abundant number, since it is smaller than the sum of its proper divisors (88989758577900).

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

66673400734068 is a wasteful number, since it uses less digits than its factorization.

66673400734068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3281819023 (or 3281819021 counting only the distinct ones).

The product of its (nonzero) digits is 73156608, while the sum is 60.

The spelling of 66673400734068 in words is "sixty-six trillion, six hundred seventy-three billion, four hundred million, seven hundred thirty-four thousand, sixty-eight".