12167420456 has 16 divisors (see below), whose sum is σ = 22980440340. Its totient is φ = 6039303040.

The previous prime is 12167420453. The next prime is 12167420479. The reversal of 12167420456 is 65402476121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 10906460356 + 1260960100 = 104434^2 + 35510^2 .

It is a super-2 number, since 2×12167420456² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12167420453) 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, 5549735 + ... + 5551926.

Almost surely, 2^12167420456 is an apocalyptic number.

It is an amenable number.

12167420456 is a deficient number, since it is larger than the sum of its proper divisors (10813019884).

12167420456 is a wasteful number, since it uses less digits than its factorization.

12167420456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11101804 (or 11101800 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 38.

Adding to 12167420456 its reverse (65402476121), we get a palindrome (77569896577).

The spelling of 12167420456 in words is "twelve billion, one hundred sixty-seven million, four hundred twenty thousand, four hundred fifty-six".