27747885418 has 64 divisors (see below), whose sum is σ = 52239790080. Its totient is φ = 10883116800.

The previous prime is 27747885379. The next prime is 27747885419. The reversal of 27747885418 is 81458874772.

It is not an unprimeable number, because it can be changed into a prime (27747885419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 157305 + ... + 283267.

It is an arithmetic number, because the mean of its divisors is an integer number (816246720).

Almost surely, 2^27747885418 is an apocalyptic number.

27747885418 is a deficient number, since it is larger than the sum of its proper divisors (24491904662).

27747885418 is a wasteful number, since it uses less digits than its factorization.

27747885418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126043.

The product of its digits is 28098560, while the sum is 61.

The spelling of 27747885418 in words is "twenty-seven billion, seven hundred forty-seven million, eight hundred eighty-five thousand, four hundred eighteen".