12685129394 has 16 divisors (see below), whose sum is σ = 23025109248. Its totient is φ = 5116690752.

The previous prime is 12685129393. The next prime is 12685129397. The reversal of 12685129394 is 49392158621.

It is not an unprimeable number, because it can be changed into a prime (12685129393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26649194 + ... + 26649669.

It is an arithmetic number, because the mean of its divisors is an integer number (1439069328).

Almost surely, 2^12685129394 is an apocalyptic number.

12685129394 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

12685129394 is a deficient number, since it is larger than the sum of its proper divisors (10339979854).

12685129394 is a wasteful number, since it uses less digits than its factorization.

12685129394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53298889.

The product of its digits is 933120, while the sum is 50.

The spelling of 12685129394 in words is "twelve billion, six hundred eighty-five million, one hundred twenty-nine thousand, three hundred ninety-four".