12356543131454 has 16 divisors (see below), whose sum is σ = 18617031197808. Its totient is φ = 6150925579392.

The previous prime is 12356543131453. The next prime is 12356543131469. The reversal of 12356543131454 is 45413134565321.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12356543131399 and 12356543131408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12356543131453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14462747 + ... + 15293270.

It is an arithmetic number, because the mean of its divisors is an integer number (1163564449863).

Almost surely, 2^{12356543131454} is an apocalyptic number.

12356543131454 is a deficient number, since it is larger than the sum of its proper divisors (6260488066354).

12356543131454 is a wasteful number, since it uses less digits than its factorization.

12356543131454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29756939.

The product of its digits is 2592000, while the sum is 47.

Adding to 12356543131454 its reverse (45413134565321), we get a palindrome (57769677696775).

The spelling of 12356543131454 in words is "twelve trillion, three hundred fifty-six billion, five hundred forty-three million, one hundred thirty-one thousand, four hundred fifty-four".