13271403656 has 16 divisors (see below), whose sum is σ = 28438722240. Its totient is φ = 5687744400.

The previous prime is 13271403641. The next prime is 13271403667. The reversal of 13271403656 is 65630417231.

It is a super-2 number, since 2×13271403656² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118494620 + ... + 118494731.

It is an arithmetic number, because the mean of its divisors is an integer number (1777420140).

Almost surely, 2^13271403656 is an apocalyptic number.

It is an amenable number.

13271403656 is an abundant number, since it is smaller than the sum of its proper divisors (15167318584).

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

13271403656 is a wasteful number, since it uses less digits than its factorization.

13271403656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236989364 (or 236989360 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 38.

The spelling of 13271403656 in words is "thirteen billion, two hundred seventy-one million, four hundred three thousand, six hundred fifty-six".