66512376116 has 12 divisors (see below), whose sum is σ = 119235601380. Its totient is φ = 32445061440.

The previous prime is 66512376109. The next prime is 66512376169. The reversal of 66512376116 is 61167321566.

It can be written as a sum of positive squares in 2 ways, for example, as 34374643216 + 32137732900 = 185404^2 + 179270^2 .

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 3 ways as a sum of consecutive naturals, for example, 202781471 + ... + 202781798.

It is an arithmetic number, because the mean of its divisors is an integer number (9936300115).

Almost surely, 2^66512376116 is an apocalyptic number.

It is an amenable number.

66512376116 is a deficient number, since it is larger than the sum of its proper divisors (52723225264).

66512376116 is a wasteful number, since it uses less digits than its factorization.

66512376116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405563314 (or 405563312 counting only the distinct ones).

The product of its digits is 272160, while the sum is 44.

The spelling of 66512376116 in words is "sixty-six billion, five hundred twelve million, three hundred seventy-six thousand, one hundred sixteen".