12355302643 has 4 divisors (see below), whose sum is σ = 12374224128. Its totient is φ = 12336381160.

The previous prime is 12355302599. The next prime is 12355302647. The reversal of 12355302643 is 34620355321.

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-12355302643 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12355302599 and 12355302608.

It is not an unprimeable number, because it can be changed into a prime (12355302647) 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, 9459763 + ... + 9461068.

It is an arithmetic number, because the mean of its divisors is an integer number (3093556032).

Almost surely, 2^12355302643 is an apocalyptic number.

12355302643 is a deficient number, since it is larger than the sum of its proper divisors (18921485).

12355302643 is an equidigital number, since it uses as much as digits as its factorization.

12355302643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18921484.

The product of its (nonzero) digits is 64800, while the sum is 34.

Adding to 12355302643 its reverse (34620355321), we get a palindrome (46975657964).

The spelling of 12355302643 in words is "twelve billion, three hundred fifty-five million, three hundred two thousand, six hundred forty-three".