27257716660 has 48 divisors (see below), whose sum is σ = 57612240000. Its totient is φ = 10832644224.

The previous prime is 27257716657. The next prime is 27257716697. The reversal of 27257716660 is 6661775272.

It is a congruent number.

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, 1968441 + ... + 1982239.

It is an arithmetic number, because the mean of its divisors is an integer number (1200255000).

Almost surely, 2^27257716660 is an apocalyptic number.

27257716660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27257716660 is an abundant number, since it is smaller than the sum of its proper divisors (30354523340).

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

27257716660 is a wasteful number, since it uses less digits than its factorization.

27257716660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14440 (or 14438 counting only the distinct ones).

The product of its (nonzero) digits is 1481760, while the sum is 49.

The spelling of 27257716660 in words is "twenty-seven billion, two hundred fifty-seven million, seven hundred sixteen thousand, six hundred sixty".