13636631731220 has 48 divisors (see below), whose sum is σ = 28781335376640. Its totient is φ = 5427178329984.

The previous prime is 13636631731187. The next prime is 13636631731231. The reversal of 13636631731220 is 2213713663631.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 5809307 + ... + 7811613.

It is an arithmetic number, because the mean of its divisors is an integer number (599611153680).

Almost surely, 2^{13636631731220} is an apocalyptic number.

13636631731220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13636631731220 is an abundant number, since it is smaller than the sum of its proper divisors (15144703645420).

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

13636631731220 is a wasteful number, since it uses less digits than its factorization.

13636631731220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2004032 (or 2004030 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 44.

The spelling of 13636631731220 in words is "thirteen trillion, six hundred thirty-six billion, six hundred thirty-one million, seven hundred thirty-one thousand, two hundred twenty".