12142431486643 has 4 divisors (see below), whose sum is σ = 12151049253480. Its totient is φ = 12133813719808.

The previous prime is 12142431486637. The next prime is 12142431486683. The reversal of 12142431486643 is 34668413424121.

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-12142431486643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12142431486613) 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, 4308881305 + ... + 4308884122.

It is an arithmetic number, because the mean of its divisors is an integer number (3037762313370).

Almost surely, 2^{12142431486643} is an apocalyptic number.

12142431486643 is a deficient number, since it is larger than the sum of its proper divisors (8617766837).

12142431486643 is an equidigital number, since it uses as much as digits as its factorization.

12142431486643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8617766836.

The product of its digits is 2654208, while the sum is 49.

The spelling of 12142431486643 in words is "twelve trillion, one hundred forty-two billion, four hundred thirty-one million, four hundred eighty-six thousand, six hundred forty-three".