13223016441256 has 8 divisors (see below), whose sum is σ = 24793155827370. Its totient is φ = 6611508220624.

The previous prime is 13223016441157. The next prime is 13223016441301. The reversal of 13223016441256 is 65214461032231.

It can be written as a sum of positive squares in only one way, i.e., 13192368336900 + 30648104356 = 3632130^2 + 175066^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 826438527571 + ... + 826438527586.

Almost surely, 2^{13223016441256} is an apocalyptic number.

It is an amenable number.

13223016441256 is a deficient number, since it is larger than the sum of its proper divisors (11570139386114).

13223016441256 is a wasteful number, since it uses less digits than its factorization.

13223016441256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1652877055163 (or 1652877055159 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 40.

Adding to 13223016441256 its reverse (65214461032231), we get a palindrome (78437477473487).

The spelling of 13223016441256 in words is "thirteen trillion, two hundred twenty-three billion, sixteen million, four hundred forty-one thousand, two hundred fifty-six".