1311434616166 has 16 divisors (see below), whose sum is σ = 1976433228000. Its totient is φ = 652629362688.

The previous prime is 1311434616161. The next prime is 1311434616179. The reversal of 1311434616166 is 6616164341131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311434616161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1004466 + ... + 1905733.

It is an arithmetic number, because the mean of its divisors is an integer number (123527076750).

Almost surely, 2^{1311434616166} is an apocalyptic number.

1311434616166 is a deficient number, since it is larger than the sum of its proper divisors (664998611834).

1311434616166 is a wasteful number, since it uses less digits than its factorization.

1311434616166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2911263.

The product of its digits is 186624, while the sum is 43.

Adding to 1311434616166 its reverse (6616164341131), we get a palindrome (7927598957297).

The spelling of 1311434616166 in words is "one trillion, three hundred eleven billion, four hundred thirty-four million, six hundred sixteen thousand, one hundred sixty-six".