13637126138 has 8 divisors (see below), whose sum is σ = 20528486100. Its totient is φ = 6794297440.

The previous prime is 13637126137. The next prime is 13637126171. The reversal of 13637126138 is 83162173631.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 13608855649 + 28270489 = 116657^2 + 5317^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 13637126095 and 13637126104.

It is not an unprimeable number, because it can be changed into a prime (13637126137) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 12132113 + ... + 12133236.

Almost surely, 2^13637126138 is an apocalyptic number.

13637126138 is a deficient number, since it is larger than the sum of its proper divisors (6891359962).

13637126138 is a wasteful number, since it uses less digits than its factorization.

13637126138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24265632.

The product of its digits is 108864, while the sum is 41.

Adding to 13637126138 its reverse (83162173631), we get a palindrome (96799299769).

The spelling of 13637126138 in words is "thirteen billion, six hundred thirty-seven million, one hundred twenty-six thousand, one hundred thirty-eight".