13680279018 has 24 divisors (see below), whose sum is σ = 33874976928. Its totient is φ = 3908651112.

The previous prime is 13680279001. The next prime is 13680279061. The reversal of 13680279018 is 81097208631.

13680279018 is a `hidden beast` number, since 1 + 368 + 0 + 279 + 0 + 18 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54286696 + ... + 54286947.

It is an arithmetic number, because the mean of its divisors is an integer number (1411457372).

Almost surely, 2^13680279018 is an apocalyptic number.

13680279018 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

13680279018 is an abundant number, since it is smaller than the sum of its proper divisors (20194697910).

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

13680279018 is a wasteful number, since it uses less digits than its factorization.

13680279018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108573658 (or 108573655 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The spelling of 13680279018 in words is "thirteen billion, six hundred eighty million, two hundred seventy-nine thousand, eighteen".