28132137793 has 8 divisors (see below), whose sum is σ = 29104108200. Its totient is φ = 27160293888.

The previous prime is 28132137791. The next prime is 28132137811. The reversal of 28132137793 is 39773123182.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3132417024 + 24999720769 = 55968^2 + 158113^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 28132137793 - 2¹ = 28132137791 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28132137791) 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 7 ways as a sum of consecutive naturals, for example, 741555 + ... + 778567.

It is an arithmetic number, because the mean of its divisors is an integer number (3638013525).

Almost surely, 2^28132137793 is an apocalyptic number.

It is an amenable number.

28132137793 is a deficient number, since it is larger than the sum of its proper divisors (971970407).

28132137793 is a wasteful number, since it uses less digits than its factorization.

28132137793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63251.

The product of its digits is 381024, while the sum is 46.

The spelling of 28132137793 in words is "twenty-eight billion, one hundred thirty-two million, one hundred thirty-seven thousand, seven hundred ninety-three".