28481038881279 has 8 divisors (see below), whose sum is σ = 38014566065712. Its totient is φ = 18967435475520.

The previous prime is 28481038881259. The next prime is 28481038881293. The reversal of 28481038881279 is 97218883018482.

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

It is not a de Polignac number, because 28481038881279 - 2²⁰ = 28481037832703 is a prime.

It is a super-2 number, since 2×28481038881279² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28481038881259) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4980941332 + ... + 4980947049.

It is an arithmetic number, because the mean of its divisors is an integer number (4751820758214).

Almost surely, 2^{28481038881279} is an apocalyptic number.

28481038881279 is a deficient number, since it is larger than the sum of its proper divisors (9533527184433).

28481038881279 is an equidigital number, since it uses as much as digits as its factorization.

28481038881279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9961889337.

The product of its (nonzero) digits is 99090432, while the sum is 69.

The spelling of 28481038881279 in words is "twenty-eight trillion, four hundred eighty-one billion, thirty-eight million, eight hundred eighty-one thousand, two hundred seventy-nine".