12640547013 has 24 divisors (see below), whose sum is σ = 17917502400. Its totient is φ = 7925253120.

The previous prime is 12640547009. The next prime is 12640547071. The reversal of 12640547013 is 31074504621.

It is not a de Polignac number, because 12640547013 - 2² = 12640547009 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12640547083) 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 23 ways as a sum of consecutive naturals, for example, 1305213 + ... + 1314861.

It is an arithmetic number, because the mean of its divisors is an integer number (746562600).

Almost surely, 2^12640547013 is an apocalyptic number.

It is an amenable number.

12640547013 is a deficient number, since it is larger than the sum of its proper divisors (5276955387).

12640547013 is a wasteful number, since it uses less digits than its factorization.

12640547013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11197 (or 11180 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 33.

The spelling of 12640547013 in words is "twelve billion, six hundred forty million, five hundred forty-seven thousand, thirteen".