13279771218 has 32 divisors (see below), whose sum is σ = 30512701440. Its totient is φ = 3774353040.

The previous prime is 13279771189. The next prime is 13279771229. The reversal of 13279771218 is 81217797231.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 819688 + ... + 835731.

It is an arithmetic number, because the mean of its divisors is an integer number (953521920).

Almost surely, 2^13279771218 is an apocalyptic number.

13279771218 is an abundant number, since it is smaller than the sum of its proper divisors (17232930222).

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

13279771218 is a wasteful number, since it uses less digits than its factorization.

13279771218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1655622.

The product of its digits is 296352, while the sum is 48.

The spelling of 13279771218 in words is "thirteen billion, two hundred seventy-nine million, seven hundred seventy-one thousand, two hundred eighteen".