12638282841993 has 16 divisors (see below), whose sum is σ = 16854685293312. Its totient is φ = 8423701362000.

The previous prime is 12638282841971. The next prime is 12638282842037. The reversal of 12638282841993 is 39914828283621.

It is not a de Polignac number, because 12638282841993 - 2¹² = 12638282837897 is a prime.

It is a super-2 number, since 2×12638282841993² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12638282841913) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 479236098 + ... + 479262468.

It is an arithmetic number, because the mean of its divisors is an integer number (1053417830832).

Almost surely, 2^{12638282841993} is an apocalyptic number.

It is an amenable number.

12638282841993 is a deficient number, since it is larger than the sum of its proper divisors (4216402451319).

12638282841993 is a wasteful number, since it uses less digits than its factorization.

12638282841993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54836.

The product of its digits is 71663616, while the sum is 66.

The spelling of 12638282841993 in words is "twelve trillion, six hundred thirty-eight billion, two hundred eighty-two million, eight hundred forty-one thousand, nine hundred ninety-three".