28159269338258 has 8 divisors (see below), whose sum is σ = 42403257720252. Its totient is φ = 14024850098176.

The previous prime is 28159269338243. The next prime is 28159269338281. The reversal of 28159269338258 is 85283396295182.

It can be written as a sum of positive squares in 2 ways, for example, as 26185561855489 + 1973707482769 = 5117183^2 + 1404887^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 28159269338191 and 28159269338200.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27392284835 + ... + 27392285862.

Almost surely, 2^{28159269338258} is an apocalyptic number.

28159269338258 is a deficient number, since it is larger than the sum of its proper divisors (14243988381994).

28159269338258 is a wasteful number, since it uses less digits than its factorization.

28159269338258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54784570956.

The product of its digits is 447897600, while the sum is 71.

The spelling of 28159269338258 in words is "twenty-eight trillion, one hundred fifty-nine billion, two hundred sixty-nine million, three hundred thirty-eight thousand, two hundred fifty-eight".