13867272218 has 4 divisors (see below), whose sum is σ = 20800908330. Its totient is φ = 6933636108.

The previous prime is 13867272197. The next prime is 13867272241. The reversal of 13867272218 is 81227276831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 81227276831 = 69467 ⋅1169293.

It can be written as a sum of positive squares in only one way, i.e., 13455304009 + 411968209 = 115997^2 + 20297^2 .

It is a super-2 number, since 2×13867272218² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3466818053 + ... + 3466818056.

Almost surely, 2^13867272218 is an apocalyptic number.

13867272218 is a deficient number, since it is larger than the sum of its proper divisors (6933636112).

13867272218 is an equidigital number, since it uses as much as digits as its factorization.

13867272218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6933636111.

The product of its digits is 451584, while the sum is 47.

The spelling of 13867272218 in words is "thirteen billion, eight hundred sixty-seven million, two hundred seventy-two thousand, two hundred eighteen".