12681632543 has 8 divisors (see below), whose sum is σ = 12957760512. Its totient is φ = 12405767416.

The previous prime is 12681632539. The next prime is 12681632549. The reversal of 12681632543 is 34523618621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12681632543 - 2² = 12681632539 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12681632543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12681632549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33446 + ... + 162732.

It is an arithmetic number, because the mean of its divisors is an integer number (1619720064).

Almost surely, 2^12681632543 is an apocalyptic number.

12681632543 is a deficient number, since it is larger than the sum of its proper divisors (276127969).

12681632543 is a wasteful number, since it uses less digits than its factorization.

12681632543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131421.

The product of its digits is 207360, while the sum is 41.

The spelling of 12681632543 in words is "twelve billion, six hundred eighty-one million, six hundred thirty-two thousand, five hundred forty-three".