12664111156 has 12 divisors (see below), whose sum is σ = 22170137668. Its totient is φ = 6329786112.

The previous prime is 12664111151. The next prime is 12664111193. The reversal of 12664111156 is 65111146621.

It can be written as a sum of positive squares in 2 ways, for example, as 5852250000 + 6811861156 = 76500^2 + 82534^2 .

It is a super-2 number, since 2×12664111156² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12664111151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 554781 + ... + 577156.

Almost surely, 2^12664111156 is an apocalyptic number.

It is an amenable number.

12664111156 is a deficient number, since it is larger than the sum of its proper divisors (9506026512).

12664111156 is a wasteful number, since it uses less digits than its factorization.

12664111156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1134738 (or 1134736 counting only the distinct ones).

The product of its digits is 8640, while the sum is 34.

Adding to 12664111156 its reverse (65111146621), we get a palindrome (77775257777).

The spelling of 12664111156 in words is "twelve billion, six hundred sixty-four million, one hundred eleven thousand, one hundred fifty-six".