13638471126 has 32 divisors (see below), whose sum is σ = 31364913408. Its totient is φ = 3872797920.

The previous prime is 13638471113. The next prime is 13638471131. The reversal of 13638471126 is 62117483631.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 989245 + ... + 1002936.

It is an arithmetic number, because the mean of its divisors is an integer number (980153544).

Almost surely, 2^13638471126 is an apocalyptic number.

13638471126 is an abundant number, since it is smaller than the sum of its proper divisors (17726442282).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13638471126 is a wasteful number, since it uses less digits than its factorization.

13638471126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1992356.

The product of its digits is 145152, while the sum is 42.

The spelling of 13638471126 in words is "thirteen billion, six hundred thirty-eight million, four hundred seventy-one thousand, one hundred twenty-six".