27763205648 has 30 divisors (see below), whose sum is σ = 56961037854. Its totient is φ = 13063744768.

The previous prime is 27763205621. The next prime is 27763205653. The reversal of 27763205648 is 84650236772.

It can be written as a sum of positive squares in only one way, i.e., 26130075904 + 1633129744 = 161648^2 + 40412^2 .

It is a junction number, because it is equal to n+sod(n) for n = 27763205596 and 27763205605.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2742965 + ... + 2753067.

Almost surely, 2^27763205648 is an apocalyptic number.

It is an amenable number.

27763205648 is an abundant number, since it is smaller than the sum of its proper divisors (29197832206).

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

27763205648 is an frugal number, since it uses more digits than its factorization.

27763205648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20231 (or 10122 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 50.

The spelling of 27763205648 in words is "twenty-seven billion, seven hundred sixty-three million, two hundred five thousand, six hundred forty-eight".