27747707660 has 24 divisors (see below), whose sum is σ = 58835920416. Its totient is φ = 10991324160.

The previous prime is 27747707651. The next prime is 27747707681. The reversal of 27747707660 is 6670774772.

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, 6732821 + ... + 6736940.

It is an arithmetic number, because the mean of its divisors is an integer number (2451496684).

Almost surely, 2^27747707660 is an apocalyptic number.

27747707660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27747707660 is an abundant number, since it is smaller than the sum of its proper divisors (31088212756).

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

27747707660 is a wasteful number, since it uses less digits than its factorization.

27747707660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13469873 (or 13469871 counting only the distinct ones).

The product of its (nonzero) digits is 4840416, while the sum is 53.

The spelling of 27747707660 in words is "twenty-seven billion, seven hundred forty-seven million, seven hundred seven thousand, six hundred sixty".