66110061708112 has 10 divisors (see below), whose sum is σ = 128088244559498. Its totient is φ = 33055030854048.

The previous prime is 66110061708077. The next prime is 66110061708113. The reversal of 66110061708112 is 21180716001166.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 66061848088336 + 48213619776 = 8127844^2 + 219576^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66110061708113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2065939428363 + ... + 2065939428394.

Almost surely, 2^{66110061708112} is an apocalyptic number.

It is an amenable number.

66110061708112 is a deficient number, since it is larger than the sum of its proper divisors (61978182851386).

66110061708112 is a wasteful number, since it uses less digits than its factorization.

66110061708112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4131878856765 (or 4131878856759 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 40.

Adding to 66110061708112 its reverse (21180716001166), we get a palindrome (87290777709278).

The spelling of 66110061708112 in words is "sixty-six trillion, one hundred ten billion, sixty-one million, seven hundred eight thousand, one hundred twelve".