28558368168880 has 40 divisors (see below), whose sum is σ = 72434406539664. Its totient is φ = 10384861152000.

The previous prime is 28558368168871. The next prime is 28558368168907. The reversal of 28558368168880 is 8886186385582.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 28558368168797 and 28558368168806.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16226344671 + ... + 16226346430.

Almost surely, 2^{28558368168880} is an apocalyptic number.

28558368168880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28558368168880 is an abundant number, since it is smaller than the sum of its proper divisors (43876038370784).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28558368168880 is a wasteful number, since it uses less digits than its factorization.

28558368168880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32452691125 (or 32452691119 counting only the distinct ones).

The product of its (nonzero) digits is 1415577600, while the sum is 76.

The spelling of 28558368168880 in words is "twenty-eight trillion, five hundred fifty-eight billion, three hundred sixty-eight million, one hundred sixty-eight thousand, eight hundred eighty".