12635781383 has 8 divisors (see below), whose sum is σ = 12943477008. Its totient is φ = 12328714944.

The previous prime is 12635781373. The next prime is 12635781401. The reversal of 12635781383 is 38318753621.

12635781383 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12635781383 - 2⁸ = 12635781127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12635781373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116516 + ... + 197097.

It is an arithmetic number, because the mean of its divisors is an integer number (1617934626).

Almost surely, 2^12635781383 is an apocalyptic number.

12635781383 is a deficient number, since it is larger than the sum of its proper divisors (307695625).

12635781383 is an equidigital number, since it uses as much as digits as its factorization.

12635781383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314593.

The product of its digits is 725760, while the sum is 47.

The spelling of 12635781383 in words is "twelve billion, six hundred thirty-five million, seven hundred eighty-one thousand, three hundred eighty-three".