28357269713 has 4 divisors (see below), whose sum is σ = 30025344420. Its totient is φ = 26689195008.

The previous prime is 28357269691. The next prime is 28357269719. The reversal of 28357269713 is 31796275382.

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 18679235584 + 9678034129 = 136672^2 + 98377^2 .

It is a cyclic number.

It is not a de Polignac number, because 28357269713 - 2⁶ = 28357269649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28357269719) 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, 834037328 + ... + 834037361.

It is an arithmetic number, because the mean of its divisors is an integer number (7506336105).

Almost surely, 2^28357269713 is an apocalyptic number.

It is an amenable number.

28357269713 is a deficient number, since it is larger than the sum of its proper divisors (1668074707).

28357269713 is a wasteful number, since it uses less digits than its factorization.

28357269713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1668074706.

The product of its digits is 3810240, while the sum is 53.

The spelling of 28357269713 in words is "twenty-eight billion, three hundred fifty-seven million, two hundred sixty-nine thousand, seven hundred thirteen".