12638124169 has 16 divisors (see below), whose sum is σ = 14098069440. Its totient is φ = 11231588160.

The previous prime is 12638124133. The next prime is 12638124199. The reversal of 12638124169 is 96142183621.

It is a cyclic number.

It is not a de Polignac number, because 12638124169 - 2¹³ = 12638115977 is a prime.

It is a super-2 number, since 2×12638124169² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12638124199) 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, 122362 + ... + 200620.

It is an arithmetic number, because the mean of its divisors is an integer number (881129340).

Almost surely, 2^12638124169 is an apocalyptic number.

It is an amenable number.

12638124169 is a deficient number, since it is larger than the sum of its proper divisors (1459945271).

12638124169 is a wasteful number, since it uses less digits than its factorization.

12638124169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78600.

The product of its digits is 124416, while the sum is 43.

The spelling of 12638124169 in words is "twelve billion, six hundred thirty-eight million, one hundred twenty-four thousand, one hundred sixty-nine".