13171415631220 has 48 divisors (see below), whose sum is σ = 34485160929408. Its totient is φ = 4105376300160.

The previous prime is 13171415631211. The next prime is 13171415631229. The reversal of 13171415631220 is 2213651417131.

It is an interprime number because it is at equal distance from previous prime (13171415631211) and next prime (13171415631229).

It is a self number, because there is not a number n which added to its sum of digits gives 13171415631220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13171415631229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4276432107 + ... + 4276435186.

It is an arithmetic number, because the mean of its divisors is an integer number (718440852696).

Almost surely, 2^{13171415631220} is an apocalyptic number.

13171415631220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13171415631220 is an abundant number, since it is smaller than the sum of its proper divisors (21313745298188).

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

13171415631220 is a wasteful number, since it uses less digits than its factorization.

13171415631220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8552867320 (or 8552867318 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 37.

The spelling of 13171415631220 in words is "thirteen trillion, one hundred seventy-one billion, four hundred fifteen million, six hundred thirty-one thousand, two hundred twenty".