66361042111 has 16 divisors (see below), whose sum is σ = 81742377024. Its totient is φ = 52462209024.

The previous prime is 66361042103. The next prime is 66361042249. The reversal of 66361042111 is 11124016366.

It is a cyclic number.

It is not a de Polignac number, because 66361042111 - 2³ = 66361042103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66361042511) 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 15 ways as a sum of consecutive naturals, for example, 188860 + ... + 410353.

It is an arithmetic number, because the mean of its divisors is an integer number (5108898564).

Almost surely, 2^66361042111 is an apocalyptic number.

66361042111 is a deficient number, since it is larger than the sum of its proper divisors (15381334913).

66361042111 is a wasteful number, since it uses less digits than its factorization.

66361042111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600450.

The product of its (nonzero) digits is 5184, while the sum is 31.

Adding to 66361042111 its reverse (11124016366), we get a palindrome (77485058477).

The spelling of 66361042111 in words is "sixty-six billion, three hundred sixty-one million, forty-two thousand, one hundred eleven".