28089755578079 has 8 divisors (see below), whose sum is σ = 30332932459200. Its totient is φ = 25858353904416.

The previous prime is 28089755578043. The next prime is 28089755578081. The reversal of 28089755578079 is 97087555798082.

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 28089755578079 - 2¹⁶ = 28089755512543 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28089755577994 and 28089755578012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28089755508079) 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, 2943796904 + ... + 2943806445.

It is an arithmetic number, because the mean of its divisors is an integer number (3791616557400).

Almost surely, 2^{28089755578079} is an apocalyptic number.

28089755578079 is a deficient number, since it is larger than the sum of its proper divisors (2243176881121).

28089755578079 is a wasteful number, since it uses less digits than its factorization.

28089755578079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5887603729.

The product of its (nonzero) digits is 3556224000, while the sum is 80.

The spelling of 28089755578079 in words is "twenty-eight trillion, eighty-nine billion, seven hundred fifty-five million, five hundred seventy-eight thousand, seventy-nine".