11728956122229 has 4 divisors (see below), whose sum is σ = 15638608162976. Its totient is φ = 7819304081484.

The previous prime is 11728956122189. The next prime is 11728956122249. The reversal of 11728956122229 is 92222165982711.

11728956122229 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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.

It is not a de Polignac number, because 11728956122229 - 2²⁸ = 11728687686773 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 (11728956122249) 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, 1954826020369 + ... + 1954826020374.

It is an arithmetic number, because the mean of its divisors is an integer number (3909652040744).

Almost surely, 2^{11728956122229} is an apocalyptic number.

It is an amenable number.

11728956122229 is a deficient number, since it is larger than the sum of its proper divisors (3909652040747).

11728956122229 is an equidigital number, since it uses as much as digits as its factorization.

11728956122229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3909652040746.

The product of its digits is 4354560, while the sum is 57.

The spelling of 11728956122229 in words is "eleven trillion, seven hundred twenty-eight billion, nine hundred fifty-six million, one hundred twenty-two thousand, two hundred twenty-nine".