13235747756136 has 128 divisors (see below), whose sum is σ = 34778712883200. Its totient is φ = 4192276435200.

The previous prime is 13235747756117. The next prime is 13235747756141. The reversal of 13235747756136 is 63165774753231.

It is a self number, because there is not a number n which added to its sum of digits gives 13235747756136.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 349402845 + ... + 349440723.

It is an arithmetic number, because the mean of its divisors is an integer number (271708694400).

Almost surely, 2^{13235747756136} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13235747756136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17389356441600).

13235747756136 is an abundant number, since it is smaller than the sum of its proper divisors (21542965127064).

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

13235747756136 is a wasteful number, since it uses less digits than its factorization.

13235747756136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47119 (or 47115 counting only the distinct ones).

The product of its digits is 66679200, while the sum is 60.

The spelling of 13235747756136 in words is "thirteen trillion, two hundred thirty-five billion, seven hundred forty-seven million, seven hundred fifty-six thousand, one hundred thirty-six".