66106005111 has 6 divisors (see below), whose sum is σ = 95486451840. Its totient is φ = 44070670068.

The previous prime is 66106005107. The next prime is 66106005127. The reversal of 66106005111 is 11150060166.

66106005111 is a `hidden beast` number, since 6 + 6 + 1 + 0 + 600 + 51 + 1 + 1 = 666.

It is not a de Polignac number, because 66106005111 - 2² = 66106005107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66106005101) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3672555831 + ... + 3672555848.

It is an arithmetic number, because the mean of its divisors is an integer number (15914408640).

Almost surely, 2^66106005111 is an apocalyptic number.

66106005111 is a deficient number, since it is larger than the sum of its proper divisors (29380446729).

66106005111 is a wasteful number, since it uses less digits than its factorization.

66106005111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7345111685 (or 7345111682 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

Adding to 66106005111 its reverse (11150060166), we get a palindrome (77256065277).

The spelling of 66106005111 in words is "sixty-six billion, one hundred six million, five thousand, one hundred eleven".