27818812944 has 60 divisors (see below), whose sum is σ = 83842816876. Its totient is φ = 8559634176.

The previous prime is 27818812913. The next prime is 27818812963. The reversal of 27818812944 is 44921881872.

27818812944 is a `hidden beast` number, since 278 + 1 + 8 + 81 + 294 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 18079491600 + 9739321344 = 134460^2 + 98688^2 .

It is a super-2 number, since 2×27818812944² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7428367 + ... + 7432110.

Almost surely, 2^27818812944 is an apocalyptic number.

27818812944 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

27818812944 is an abundant number, since it is smaller than the sum of its proper divisors (56024003932).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27818812944 is a wasteful number, since it uses less digits than its factorization.

27818812944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14860504 (or 14860495 counting only the distinct ones).

The product of its digits is 2064384, while the sum is 54.

The spelling of 27818812944 in words is "twenty-seven billion, eight hundred eighteen million, eight hundred twelve thousand, nine hundred forty-four".