66546236612012 has 6 divisors (see below), whose sum is σ = 116455914071028. Its totient is φ = 33273118306004.

The previous prime is 66546236611991. The next prime is 66546236612017. The reversal of 66546236612012 is 21021663264566.

It is not an unprimeable number, because it can be changed into a prime (66546236612017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8318279576498 + ... + 8318279576505.

It is an arithmetic number, because the mean of its divisors is an integer number (19409319011838).

Almost surely, 2^{66546236612012} is an apocalyptic number.

It is an amenable number.

66546236612012 is a deficient number, since it is larger than the sum of its proper divisors (49909677459016).

66546236612012 is a wasteful number, since it uses less digits than its factorization.

66546236612012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16636559153007 (or 16636559153005 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 50.

Adding to 66546236612012 its reverse (21021663264566), we get a palindrome (87567899876578).

The spelling of 66546236612012 in words is "sixty-six trillion, five hundred forty-six billion, two hundred thirty-six million, six hundred twelve thousand, twelve".