28168639758339 has 32 divisors (see below), whose sum is σ = 39551392565760. Its totient is φ = 17783314905600.

The previous prime is 28168639758323. The next prime is 28168639758359. The reversal of 28168639758339 is 93385793686182.

It is not a de Polignac number, because 28168639758339 - 2⁴ = 28168639758323 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28168639758359) 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 31 ways as a sum of consecutive naturals, for example, 2160662329 + ... + 2160675365.

It is an arithmetic number, because the mean of its divisors is an integer number (1235981017680).

Almost surely, 2^{28168639758339} is an apocalyptic number.

28168639758339 is a deficient number, since it is larger than the sum of its proper divisors (11382752807421).

28168639758339 is a wasteful number, since it uses less digits than its factorization.

28168639758339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25931.

The product of its digits is 2821754880, while the sum is 78.

The spelling of 28168639758339 in words is "twenty-eight trillion, one hundred sixty-eight billion, six hundred thirty-nine million, seven hundred fifty-eight thousand, three hundred thirty-nine".