66800111110011 has 48 divisors (see below), whose sum is σ = 102355442242560. Its totient is φ = 41894315274240.

The previous prime is 66800111109973. The next prime is 66800111110091. The reversal of 66800111110011 is 11001111100866.

It is not a de Polignac number, because 66800111110011 - 2¹⁹ = 66800110585723 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66800111110091) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3744525 + ... + 12149966.

It is an arithmetic number, because the mean of its divisors is an integer number (2132405046720).

Almost surely, 2^{66800111110011} is an apocalyptic number.

66800111110011 is a deficient number, since it is larger than the sum of its proper divisors (35555331132549).

66800111110011 is a wasteful number, since it uses less digits than its factorization.

66800111110011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15894856 (or 15894853 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 27.

Adding to 66800111110011 its reverse (11001111100866), we get a palindrome (77801222210877).

The spelling of 66800111110011 in words is "sixty-six trillion, eight hundred billion, one hundred eleven million, one hundred ten thousand, eleven".