12783147841 has 4 divisors (see below), whose sum is σ = 13535097732. Its totient is φ = 12031197952.

The previous prime is 12783147827. The next prime is 12783147847. The reversal of 12783147841 is 14874138721.

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 4914570816 + 7868577025 = 70104^2 + 88705^2 .

It is a cyclic number.

It is not a de Polignac number, because 12783147841 - 2⁵ = 12783147809 is a prime.

It is a super-2 number, since 2×12783147841² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12783147791 and 12783147800.

It is not an unprimeable number, because it can be changed into a prime (12783147847) 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, 375974920 + ... + 375974953.

It is an arithmetic number, because the mean of its divisors is an integer number (3383774433).

Almost surely, 2^12783147841 is an apocalyptic number.

It is an amenable number.

12783147841 is a deficient number, since it is larger than the sum of its proper divisors (751949891).

12783147841 is an equidigital number, since it uses as much as digits as its factorization.

12783147841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 751949890.

The product of its digits is 301056, while the sum is 46.

The spelling of 12783147841 in words is "twelve billion, seven hundred eighty-three million, one hundred forty-seven thousand, eight hundred forty-one".