66085301012 has 6 divisors (see below), whose sum is σ = 115649276778. Its totient is φ = 33042650504.

The previous prime is 66085300997. The next prime is 66085301039. The reversal of 66085301012 is 21010358066.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 55943602576 + 10141698436 = 236524^2 + 100706^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 66085301012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8260662623 + ... + 8260662630.

It is an arithmetic number, because the mean of its divisors is an integer number (19274879463).

Almost surely, 2^66085301012 is an apocalyptic number.

It is an amenable number.

66085301012 is a deficient number, since it is larger than the sum of its proper divisors (49563975766).

66085301012 is a wasteful number, since it uses less digits than its factorization.

66085301012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16521325257 (or 16521325255 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 32.

Adding to 66085301012 its reverse (21010358066), we get a palindrome (87095659078).

The spelling of 66085301012 in words is "sixty-six billion, eighty-five million, three hundred one thousand, twelve".