12154040454106 has 32 divisors (see below), whose sum is σ = 18592025055120. Its totient is φ = 5956910429184.

The previous prime is 12154040454013. The next prime is 12154040454107. The reversal of 12154040454106 is 60145404045121.

It can be written as a sum of positive squares in 8 ways, for example, as 11382965038225 + 771075415881 = 3373865^2 + 878109^2 .

It is not an unprimeable number, because it can be changed into a prime (12154040454107) 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, 1264328956 + ... + 1264338568.

Almost surely, 2^{12154040454106} is an apocalyptic number.

12154040454106 is a deficient number, since it is larger than the sum of its proper divisors (6437984601014).

12154040454106 is a wasteful number, since it uses less digits than its factorization.

12154040454106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19330.

The product of its (nonzero) digits is 76800, while the sum is 37.

Adding to 12154040454106 its reverse (60145404045121), we get a palindrome (72299444499227).

The spelling of 12154040454106 in words is "twelve trillion, one hundred fifty-four billion, forty million, four hundred fifty-four thousand, one hundred six".