28766136818 has 16 divisors (see below), whose sum is σ = 44176008096. Its totient is φ = 14041154400.

The previous prime is 28766136733. The next prime is 28766136827. The reversal of 28766136818 is 81863166782.

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, 77093 + ... + 251943.

It is an arithmetic number, because the mean of its divisors is an integer number (2761000506).

Almost surely, 2^28766136818 is an apocalyptic number.

28766136818 is a deficient number, since it is larger than the sum of its proper divisors (15409871278).

28766136818 is a wasteful number, since it uses less digits than its factorization.

28766136818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176809.

The product of its digits is 4644864, while the sum is 56.

The spelling of 28766136818 in words is "twenty-eight billion, seven hundred sixty-six million, one hundred thirty-six thousand, eight hundred eighteen".