12549218143 has 8 divisors (see below), whose sum is σ = 15645778560. Its totient is φ = 9778611480.

The previous prime is 12549218137. The next prime is 12549218203. The reversal of 12549218143 is 34181294521.

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

It is not a de Polignac number, because 12549218143 - 2¹⁷ = 12549087071 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12549218096 and 12549218105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12549218113) 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, 81488353 + ... + 81488506.

It is an arithmetic number, because the mean of its divisors is an integer number (1955722320).

Almost surely, 2^12549218143 is an apocalyptic number.

12549218143 is a deficient number, since it is larger than the sum of its proper divisors (3096560417).

12549218143 is a wasteful number, since it uses less digits than its factorization.

12549218143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162976877.

The product of its digits is 69120, while the sum is 40.

The spelling of 12549218143 in words is "twelve billion, five hundred forty-nine million, two hundred eighteen thousand, one hundred forty-three".