12640000039 has 8 divisors (see below), whose sum is σ = 12863637248. Its totient is φ = 12417391800.

The previous prime is 12640000007. The next prime is 12640000067. The reversal of 12640000039 is 93000004621.

12640000039 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 12640000039 - 2⁵ = 12640000007 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12639999968 and 12640000022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12640000069) 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, 232437 + ... + 281614.

It is an arithmetic number, because the mean of its divisors is an integer number (1607954656).

Almost surely, 2^12640000039 is an apocalyptic number.

12640000039 is a deficient number, since it is larger than the sum of its proper divisors (223637209).

12640000039 is an equidigital number, since it uses as much as digits as its factorization.

12640000039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 514485.

The product of its (nonzero) digits is 1296, while the sum is 25.

The spelling of 12640000039 in words is "twelve billion, six hundred forty million, thirty-nine", and thus it is an aban number.