12434685538 has 16 divisors (see below), whose sum is σ = 20692545120. Its totient is φ = 5556330400.

The previous prime is 12434685521. The next prime is 12434685539. The reversal of 12434685538 is 83558643421.

12434685538 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 12434685491 and 12434685500.

It is not an unprimeable number, because it can be changed into a prime (12434685539) 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, 4788643 + ... + 4791238.

It is an arithmetic number, because the mean of its divisors is an integer number (1293284070).

Almost surely, 2^12434685538 is an apocalyptic number.

12434685538 is a deficient number, since it is larger than the sum of its proper divisors (8257859582).

12434685538 is a wasteful number, since it uses less digits than its factorization.

12434685538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9579953.

The product of its digits is 2764800, while the sum is 49.

The spelling of 12434685538 in words is "twelve billion, four hundred thirty-four million, six hundred eighty-five thousand, five hundred thirty-eight".