12279227138743 has 4 divisors (see below), whose sum is σ = 12487349632680. Its totient is φ = 12071104644808.

The previous prime is 12279227138723. The next prime is 12279227138777. The reversal of 12279227138743 is 34783172297221.

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 12279227138743 - 2¹³ = 12279227130551 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 (12279227138723) 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, 104061246880 + ... + 104061246997.

It is an arithmetic number, because the mean of its divisors is an integer number (3121837408170).

Almost surely, 2^{12279227138743} is an apocalyptic number.

12279227138743 is a deficient number, since it is larger than the sum of its proper divisors (208122493937).

12279227138743 is an equidigital number, since it uses as much as digits as its factorization.

12279227138743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208122493936.

The product of its digits is 14224896, while the sum is 58.

The spelling of 12279227138743 in words is "twelve trillion, two hundred seventy-nine billion, two hundred twenty-seven million, one hundred thirty-eight thousand, seven hundred forty-three".