13217870279 has 4 divisors (see below), whose sum is σ = 13257092784. Its totient is φ = 13178647776.

The previous prime is 13217870261. The next prime is 13217870291. The reversal of 13217870279 is 97207871231.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13217870279 - 2³² = 8922902983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13217800279) 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, 19610747 + ... + 19611420.

It is an arithmetic number, because the mean of its divisors is an integer number (3314273196).

Almost surely, 2^13217870279 is an apocalyptic number.

13217870279 is a deficient number, since it is larger than the sum of its proper divisors (39222505).

13217870279 is an equidigital number, since it uses as much as digits as its factorization.

13217870279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39222504.

The product of its (nonzero) digits is 296352, while the sum is 47.

The spelling of 13217870279 in words is "thirteen billion, two hundred seventeen million, eight hundred seventy thousand, two hundred seventy-nine".