12646138593 has 32 divisors (see below), whose sum is σ = 18597123072. Its totient is φ = 7580024000.

The previous prime is 12646138501. The next prime is 12646138607. The reversal of 12646138593 is 39583164621.

It is a cyclic number.

It is not a de Polignac number, because 12646138593 - 2¹³ = 12646130401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12646138493) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4354780 + ... + 4357682.

It is an arithmetic number, because the mean of its divisors is an integer number (581160096).

Almost surely, 2^12646138593 is an apocalyptic number.

It is an amenable number.

12646138593 is a deficient number, since it is larger than the sum of its proper divisors (5950984479).

12646138593 is a wasteful number, since it uses less digits than its factorization.

12646138593 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4325.

The product of its digits is 933120, while the sum is 48.

The spelling of 12646138593 in words is "twelve billion, six hundred forty-six million, one hundred thirty-eight thousand, five hundred ninety-three".