66161101101 has 16 divisors (see below), whose sum is σ = 88386623040. Its totient is φ = 44021577600.

The previous prime is 66161101081. The next prime is 66161101117. The reversal of 66161101101 is 10110116166.

66161101101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 66161101101 - 2⁹ = 66161100589 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66161101801) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3331401 + ... + 3351201.

It is an arithmetic number, because the mean of its divisors is an integer number (5524163940).

Almost surely, 2^66161101101 is an apocalyptic number.

It is an amenable number.

66161101101 is a deficient number, since it is larger than the sum of its proper divisors (22225521939).

66161101101 is a wasteful number, since it uses less digits than its factorization.

66161101101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21916.

The product of its (nonzero) digits is 216, while the sum is 24.

Adding to 66161101101 its reverse (10110116166), we get a palindrome (76271217267).

The spelling of 66161101101 in words is "sixty-six billion, one hundred sixty-one million, one hundred one thousand, one hundred one".