12135260143 has 4 divisors (see below), whose sum is σ = 12136200088. Its totient is φ = 12134320200.

The previous prime is 12135260141. The next prime is 12135260167. The reversal of 12135260143 is 34106253121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12135260143 - 2¹ = 12135260141 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 (12135260141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 450333 + ... + 476518.

It is an arithmetic number, because the mean of its divisors is an integer number (3034050022).

Almost surely, 2^12135260143 is an apocalyptic number.

12135260143 is a deficient number, since it is larger than the sum of its proper divisors (939945).

12135260143 is an equidigital number, since it uses as much as digits as its factorization.

12135260143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 939944.

The product of its (nonzero) digits is 4320, while the sum is 28.

The spelling of 12135260143 in words is "twelve billion, one hundred thirty-five million, two hundred sixty thousand, one hundred forty-three".