13132731556 has 12 divisors (see below), whose sum is σ = 26265463168. Its totient is φ = 5628313512.

The previous prime is 13132731533. The next prime is 13132731571. The reversal of 13132731556 is 65513723131.

13132731556 is an admirable number.

It is a super-3 number, since 3×13132731556³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 234513036 + ... + 234513091.

Almost surely, 2^13132731556 is an apocalyptic number.

It is an amenable number.

13132731556 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

13132731556 is a wasteful number, since it uses less digits than its factorization.

13132731556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469026138 (or 469026136 counting only the distinct ones).

The product of its digits is 56700, while the sum is 37.

The spelling of 13132731556 in words is "thirteen billion, one hundred thirty-two million, seven hundred thirty-one thousand, five hundred fifty-six".