13205243143 has 16 divisors (see below), whose sum is σ = 14192133120. Its totient is φ = 12248529696.

The previous prime is 13205243137. The next prime is 13205243147. The reversal of 13205243143 is 34134250231.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13205243143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13205243147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 476946 + ... + 503872.

It is an arithmetic number, because the mean of its divisors is an integer number (887008320).

Almost surely, 2^13205243143 is an apocalyptic number.

13205243143 is a deficient number, since it is larger than the sum of its proper divisors (986889977).

13205243143 is a wasteful number, since it uses less digits than its factorization.

13205243143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27486.

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 13205243143 its reverse (34134250231), we get a palindrome (47339493374).

The spelling of 13205243143 in words is "thirteen billion, two hundred five million, two hundred forty-three thousand, one hundred forty-three".