12355442705 has 4 divisors (see below), whose sum is σ = 14826531252. Its totient is φ = 9884354160.

The previous prime is 12355442669. The next prime is 12355442719. The reversal of 12355442705 is 50724455321.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3029291521 + 9326151184 = 55039^2 + 96572^2 .

It is not a de Polignac number, because 12355442705 - 2⁶ = 12355442641 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1235544266 + ... + 1235544275.

It is an arithmetic number, because the mean of its divisors is an integer number (3706632813).

Almost surely, 2^12355442705 is an apocalyptic number.

It is an amenable number.

12355442705 is a deficient number, since it is larger than the sum of its proper divisors (2471088547).

12355442705 is an equidigital number, since it uses as much as digits as its factorization.

12355442705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2471088546.

The product of its (nonzero) digits is 168000, while the sum is 38.

The spelling of 12355442705 in words is "twelve billion, three hundred fifty-five million, four hundred forty-two thousand, seven hundred five".