13400432143 has 12 divisors (see below), whose sum is σ = 16125785640. Its totient is φ = 11090011632.

The previous prime is 13400432141. The next prime is 13400432161. The reversal of 13400432143 is 34123400431.

It is not a de Polignac number, because 13400432143 - 2¹ = 13400432141 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 (13400432141) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4713721 + ... + 4716562.

It is an arithmetic number, because the mean of its divisors is an integer number (1343815470).

Almost surely, 2^13400432143 is an apocalyptic number.

13400432143 is a deficient number, since it is larger than the sum of its proper divisors (2725353497).

13400432143 is an equidigital number, since it uses as much as digits as its factorization.

13400432143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9430326 (or 9430319 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 13400432143 its reverse (34123400431), we get a palindrome (47523832574).

The spelling of 13400432143 in words is "thirteen billion, four hundred million, four hundred thirty-two thousand, one hundred forty-three".