13612779208 has 16 divisors (see below), whose sum is σ = 29170241280. Its totient is φ = 5834048208.

The previous prime is 13612779181. The next prime is 13612779209. The reversal of 13612779208 is 80297721631.

It is not an unprimeable number, because it can be changed into a prime (13612779209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121542616 + ... + 121542727.

It is an arithmetic number, because the mean of its divisors is an integer number (1823140080).

Almost surely, 2^13612779208 is an apocalyptic number.

It is an amenable number.

13612779208 is an abundant number, since it is smaller than the sum of its proper divisors (15557462072).

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

13612779208 is a wasteful number, since it uses less digits than its factorization.

13612779208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243085356 (or 243085352 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 46.

The spelling of 13612779208 in words is "thirteen billion, six hundred twelve million, seven hundred seventy-nine thousand, two hundred eight".