13220639269 has 4 divisors (see below), whose sum is σ = 13795449696. Its totient is φ = 12645828844.

The previous prime is 13220639249. The next prime is 13220639273. The reversal of 13220639269 is 96293602231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 96293602231 = 17 ⋅5664329543.

It is a cyclic number.

It is not a de Polignac number, because 13220639269 - 2¹⁹ = 13220114981 is a prime.

It is a super-2 number, since 2×13220639269² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13220639239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 287405179 + ... + 287405224.

It is an arithmetic number, because the mean of its divisors is an integer number (3448862424).

Almost surely, 2^13220639269 is an apocalyptic number.

It is an amenable number.

13220639269 is a deficient number, since it is larger than the sum of its proper divisors (574810427).

13220639269 is an equidigital number, since it uses as much as digits as its factorization.

13220639269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 574810426.

The product of its (nonzero) digits is 209952, while the sum is 43.

The spelling of 13220639269 in words is "thirteen billion, two hundred twenty million, six hundred thirty-nine thousand, two hundred sixty-nine".