12511243143 has 24 divisors (see below), whose sum is σ = 21868393248. Its totient is φ = 6728735232.

The previous prime is 12511243103. The next prime is 12511243201. The reversal of 12511243143 is 34134211521.

12511243143 is a `hidden beast` number, since 1 + 2 + 511 + 2 + 4 + 3 + 143 = 666.

It is not a de Polignac number, because 12511243143 - 2⁶ = 12511243079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12511243103) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5839846 + ... + 5841987.

It is an arithmetic number, because the mean of its divisors is an integer number (911183052).

Almost surely, 2^12511243143 is an apocalyptic number.

12511243143 is a deficient number, since it is larger than the sum of its proper divisors (9357150105).

12511243143 is a wasteful number, since it uses less digits than its factorization.

12511243143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11681863 (or 11681860 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

Adding to 12511243143 its reverse (34134211521), we get a palindrome (46645454664).

The spelling of 12511243143 in words is "twelve billion, five hundred eleven million, two hundred forty-three thousand, one hundred forty-three".