12735055642 has 4 divisors (see below), whose sum is σ = 19102583466. Its totient is φ = 6367527820.

The previous prime is 12735055639. The next prime is 12735055643. The reversal of 12735055642 is 24655053721.

12735055642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24655053721 = 15461 ⋅1594661.

It can be written as a sum of positive squares in only one way, i.e., 12221081401 + 513974241 = 110549^2 + 22671^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12735055595 and 12735055604.

It is not an unprimeable number, because it can be changed into a prime (12735055643) 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 as a sum of consecutive naturals, namely, 3183763909 + ... + 3183763912.

Almost surely, 2^12735055642 is an apocalyptic number.

12735055642 is a deficient number, since it is larger than the sum of its proper divisors (6367527824).

12735055642 is an equidigital number, since it uses as much as digits as its factorization.

12735055642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6367527823.

The product of its (nonzero) digits is 252000, while the sum is 40.

The spelling of 12735055642 in words is "twelve billion, seven hundred thirty-five million, fifty-five thousand, six hundred forty-two".