27661630884 has 48 divisors (see below), whose sum is σ = 66179823360. Its totient is φ = 8987247360.

The previous prime is 27661630877. The next prime is 27661630901. The reversal of 27661630884 is 48803616672.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 512037 + ... + 563475.

It is an arithmetic number, because the mean of its divisors is an integer number (1378746320).

Almost surely, 2^27661630884 is an apocalyptic number.

It is an amenable number.

27661630884 is an abundant number, since it is smaller than the sum of its proper divisors (38518192476).

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

27661630884 is a wasteful number, since it uses less digits than its factorization.

27661630884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52580 (or 52578 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 51.

The spelling of 27661630884 in words is "twenty-seven billion, six hundred sixty-one million, six hundred thirty thousand, eight hundred eighty-four".