28578075605578 has 8 divisors (see below), whose sum is σ = 42867137620800. Its totient is φ = 14289029731980.

The previous prime is 28578075605551. The next prime is 28578075605641. The reversal of 28578075605578 is 87550657087582.

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

It is a self number, because there is not a number n which added to its sum of digits gives 28578075605578.

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, 2521593 + ... + 7969603.

It is an arithmetic number, because the mean of its divisors is an integer number (5358392202600).

Almost surely, 2^{28578075605578} is an apocalyptic number.

28578075605578 is a deficient number, since it is larger than the sum of its proper divisors (14289062015222).

28578075605578 is a wasteful number, since it uses less digits than its factorization.

28578075605578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8070812.

The product of its (nonzero) digits is 1317120000, while the sum is 73.

The spelling of 28578075605578 in words is "twenty-eight trillion, five hundred seventy-eight billion, seventy-five million, six hundred five thousand, five hundred seventy-eight".