13684637480 has 32 divisors (see below), whose sum is σ = 30857266440. Its totient is φ = 5461973760.

The previous prime is 13684637467. The next prime is 13684637503. The reversal of 13684637480 is 8473648631.

It can be written as a sum of positive squares in 4 ways, for example, as 12222186916 + 1462450564 = 110554^2 + 38242^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 352619 + ... + 389498.

Almost surely, 2^13684637480 is an apocalyptic number.

13684637480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13684637480 is an abundant number, since it is smaller than the sum of its proper divisors (17172628960).

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

13684637480 is a wasteful number, since it uses less digits than its factorization.

13684637480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 742589 (or 742585 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 50.

The spelling of 13684637480 in words is "thirteen billion, six hundred eighty-four million, six hundred thirty-seven thousand, four hundred eighty".