11429128547 has 4 divisors (see below), whose sum is σ = 11451065976. Its totient is φ = 11407191120.

The previous prime is 11429128523. The next prime is 11429128567. The reversal of 11429128547 is 74582192411.

It is a happy number.

11429128547 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 an emirpimes, since its reverse is a distinct semiprime: 74582192411 = 4787 ⋅15580153.

It is a cyclic number.

It is not a de Polignac number, because 11429128547 - 2¹² = 11429124451 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11429128498 and 11429128507.

It is not an unprimeable number, because it can be changed into a prime (11429128567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10967933 + ... + 10968974.

It is an arithmetic number, because the mean of its divisors is an integer number (2862766494).

Almost surely, 2^11429128547 is an apocalyptic number.

11429128547 is a deficient number, since it is larger than the sum of its proper divisors (21937429).

11429128547 is an equidigital number, since it uses as much as digits as its factorization.

11429128547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21937428.

The product of its digits is 161280, while the sum is 44.

The spelling of 11429128547 in words is "eleven billion, four hundred twenty-nine million, one hundred twenty-eight thousand, five hundred forty-seven".