13781133636 has 48 divisors (see below), whose sum is σ = 32367736128. Its totient is φ = 4563504000.

The previous prime is 13781133631. The next prime is 13781133643. The reversal of 13781133636 is 63633118731.

13781133636 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (13781133631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4173186 + ... + 4176486.

It is an arithmetic number, because the mean of its divisors is an integer number (674327836).

Almost surely, 2^13781133636 is an apocalyptic number.

It is an amenable number.

13781133636 is an abundant number, since it is smaller than the sum of its proper divisors (18586602492).

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

13781133636 is a wasteful number, since it uses less digits than its factorization.

13781133636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5492 (or 5490 counting only the distinct ones).

The product of its digits is 163296, while the sum is 42.

The spelling of 13781133636 in words is "thirteen billion, seven hundred eighty-one million, one hundred thirty-three thousand, six hundred thirty-six".