12941543546 has 4 divisors (see below), whose sum is σ = 19412315322. Its totient is φ = 6470771772.

The previous prime is 12941543519. The next prime is 12941543569. The reversal of 12941543546 is 64534514921.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 12873398521 + 68145025 = 113461^2 + 8255^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12941543497 and 12941543506.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3235385885 + ... + 3235385888.

Almost surely, 2^12941543546 is an apocalyptic number.

12941543546 is a deficient number, since it is larger than the sum of its proper divisors (6470771776).

12941543546 is an equidigital number, since it uses as much as digits as its factorization.

12941543546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6470771775.

The product of its digits is 518400, while the sum is 44.

The spelling of 12941543546 in words is "twelve billion, nine hundred forty-one million, five hundred forty-three thousand, five hundred forty-six".