27800718728 has 32 divisors (see below), whose sum is σ = 52804416000. Its totient is φ = 13719663360.

The previous prime is 27800718713. The next prime is 27800718733. The reversal of 27800718728 is 82781700872.

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, 2452193 + ... + 2463503.

It is an arithmetic number, because the mean of its divisors is an integer number (1650138000).

Almost surely, 2^27800718728 is an apocalyptic number.

It is an amenable number.

27800718728 is a deficient number, since it is larger than the sum of its proper divisors (25003697272).

27800718728 is a wasteful number, since it uses less digits than its factorization.

27800718728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15285 (or 15281 counting only the distinct ones).

The product of its (nonzero) digits is 702464, while the sum is 50.

The spelling of 27800718728 in words is "twenty-seven billion, eight hundred million, seven hundred eighteen thousand, seven hundred twenty-eight".