28321178535213 has 8 divisors (see below), whose sum is σ = 37761656268288. Its totient is φ = 18880743246144.

The previous prime is 28321178535179. The next prime is 28321178535227. The reversal of 28321178535213 is 31253587112382.

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

It is not a de Polignac number, because 28321178535213 - 2²² = 28321174340909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28321178535113) 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, 9019981 + ... + 11747442.

It is an arithmetic number, because the mean of its divisors is an integer number (4720207033536).

Almost surely, 2^{28321178535213} is an apocalyptic number.

It is an amenable number.

28321178535213 is a deficient number, since it is larger than the sum of its proper divisors (9440477733075).

28321178535213 is a wasteful number, since it uses less digits than its factorization.

28321178535213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21222003.

The product of its digits is 2419200, while the sum is 51.

The spelling of 28321178535213 in words is "twenty-eight trillion, three hundred twenty-one billion, one hundred seventy-eight million, five hundred thirty-five thousand, two hundred thirteen".