12205563743 has 4 divisors (see below), whose sum is σ = 12238286808. Its totient is φ = 12172840680.

The previous prime is 12205563683. The next prime is 12205563751. The reversal of 12205563743 is 34736550221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34736550221 = 139 ⋅249903239.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12205563743 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12205563697 and 12205563706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12205563143) 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, 16360973 + ... + 16361718.

It is an arithmetic number, because the mean of its divisors is an integer number (3059571702).

Almost surely, 2^12205563743 is an apocalyptic number.

12205563743 is a deficient number, since it is larger than the sum of its proper divisors (32723065).

12205563743 is an equidigital number, since it uses as much as digits as its factorization.

12205563743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32723064.

The product of its (nonzero) digits is 151200, while the sum is 38.

The spelling of 12205563743 in words is "twelve billion, two hundred five million, five hundred sixty-three thousand, seven hundred forty-three".