28536618525578 has 8 divisors (see below), whose sum is σ = 43131682962720. Its totient is φ = 14159390871340.

The previous prime is 28536618525563. The next prime is 28536618525641. The reversal of 28536618525578 is 87552581663582.

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

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, 54459195398 + ... + 54459195921.

It is an arithmetic number, because the mean of its divisors is an integer number (5391460370340).

Almost surely, 2^{28536618525578} is an apocalyptic number.

28536618525578 is a deficient number, since it is larger than the sum of its proper divisors (14595064437142).

28536618525578 is a wasteful number, since it uses less digits than its factorization.

28536618525578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108918391452.

The product of its digits is 967680000, while the sum is 71.

The spelling of 28536618525578 in words is "twenty-eight trillion, five hundred thirty-six billion, six hundred eighteen million, five hundred twenty-five thousand, five hundred seventy-eight".