28699719313 has 8 divisors (see below), whose sum is σ = 28904628168. Its totient is φ = 28495509504.

The previous prime is 28699719299. The next prime is 28699719353. The reversal of 28699719313 is 31391799682.

It can be written as a sum of positive squares in 4 ways, for example, as 3480056064 + 25219663249 = 58992^2 + 158807^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28699719313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28699719353) 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 7 ways as a sum of consecutive naturals, for example, 92220 + ... + 256717.

It is an arithmetic number, because the mean of its divisors is an integer number (3613078521).

Almost surely, 2^28699719313 is an apocalyptic number.

It is an amenable number.

28699719313 is a deficient number, since it is larger than the sum of its proper divisors (204908855).

28699719313 is a wasteful number, since it uses less digits than its factorization.

28699719313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349523.

The product of its digits is 4408992, while the sum is 58.

The spelling of 28699719313 in words is "twenty-eight billion, six hundred ninety-nine million, seven hundred nineteen thousand, three hundred thirteen".