66110061656211 has 8 divisors (see below), whose sum is σ = 88151834431440. Its totient is φ = 44070831659232.

The previous prime is 66110061656183. The next prime is 66110061656279. The reversal of 66110061656211 is 11265616001166.

66110061656211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 66110061656211 - 2¹⁴ = 66110061639827 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66110061656311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 635633896 + ... + 635737893.

It is an arithmetic number, because the mean of its divisors is an integer number (11018979303930).

Almost surely, 2^{66110061656211} is an apocalyptic number.

66110061656211 is a deficient number, since it is larger than the sum of its proper divisors (22041772775229).

66110061656211 is a wasteful number, since it uses less digits than its factorization.

66110061656211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1271389125.

The product of its (nonzero) digits is 77760, while the sum is 42.

Adding to 66110061656211 its reverse (11265616001166), we get a palindrome (77375677657377).

The spelling of 66110061656211 in words is "sixty-six trillion, one hundred ten billion, sixty-one million, six hundred fifty-six thousand, two hundred eleven".