12640565053 has 16 divisors (see below), whose sum is σ = 13192058880. Its totient is φ = 12098689200.

The previous prime is 12640565051. The next prime is 12640565059. The reversal of 12640565053 is 35056504621.

It is a cyclic number.

It is not a de Polignac number, because 12640565053 - 2¹ = 12640565051 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12640565051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1241658 + ... + 1251796.

It is an arithmetic number, because the mean of its divisors is an integer number (824503680).

Almost surely, 2^12640565053 is an apocalyptic number.

It is an amenable number.

12640565053 is a deficient number, since it is larger than the sum of its proper divisors (551493827).

12640565053 is a wasteful number, since it uses less digits than its factorization.

12640565053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10608.

The product of its (nonzero) digits is 108000, while the sum is 37.

The spelling of 12640565053 in words is "twelve billion, six hundred forty million, five hundred sixty-five thousand, fifty-three".