112643147909 has 2 divisors, whose sum is σ = 112643147910. Its totient is φ = 112643147908.

The previous prime is 112643147893. The next prime is 112643147941. The reversal of 112643147909 is 909741346211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 87749250625 + 24893897284 = 296225^2 + 157778^2 .

It is an emirp because it is prime and its reverse (909741346211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 112643147909 - 2⁴ = 112643147893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (112643147009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56321573954 + 56321573955.

It is an arithmetic number, because the mean of its divisors is an integer number (56321573955).

Almost surely, 2^112643147909 is an apocalyptic number.

It is an amenable number.

112643147909 is a deficient number, since it is larger than the sum of its proper divisors (1).

112643147909 is an equidigital number, since it uses as much as digits as its factorization.

112643147909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 326592, while the sum is 47.

The spelling of 112643147909 in words is "one hundred twelve billion, six hundred forty-three million, one hundred forty-seven thousand, nine hundred nine".