11428896709 has 4 divisors (see below), whose sum is σ = 11448170316. Its totient is φ = 11409623104.

The previous prime is 11428896707. The next prime is 11428896757. The reversal of 11428896709 is 90769882411.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4967148484 + 6461748225 = 70478^2 + 80385^2 .

It is a cyclic number.

It is not a de Polignac number, because 11428896709 - 2¹ = 11428896707 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11428896709.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11428896707) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 9635914 + ... + 9637099.

It is an arithmetic number, because the mean of its divisors is an integer number (2862042579).

Almost surely, 2^11428896709 is an apocalyptic number.

It is an amenable number.

11428896709 is a deficient number, since it is larger than the sum of its proper divisors (19273607).

11428896709 is an equidigital number, since it uses as much as digits as its factorization.

11428896709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19273606.

The product of its (nonzero) digits is 1741824, while the sum is 55.

The spelling of 11428896709 in words is "eleven billion, four hundred twenty-eight million, eight hundred ninety-six thousand, seven hundred nine".