12617436831143 has 4 divisors (see below), whose sum is σ = 12687925305240. Its totient is φ = 12546948357048.

The previous prime is 12617436831121. The next prime is 12617436831161. The reversal of 12617436831143 is 34113863471621.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12617436831143 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12617436831091 and 12617436831100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12617436831743) 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, 35244236780 + ... + 35244237137.

It is an arithmetic number, because the mean of its divisors is an integer number (3171981326310).

Almost surely, 2^{12617436831143} is an apocalyptic number.

12617436831143 is a deficient number, since it is larger than the sum of its proper divisors (70488474097).

12617436831143 is an equidigital number, since it uses as much as digits as its factorization.

12617436831143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70488474096.

The product of its digits is 1741824, while the sum is 50.

The spelling of 12617436831143 in words is "twelve trillion, six hundred seventeen billion, four hundred thirty-six million, eight hundred thirty-one thousand, one hundred forty-three".