27728601318 has 32 divisors (see below), whose sum is σ = 67220853120. Its totient is φ = 8402606280.

The previous prime is 27728601301. The next prime is 27728601323. The reversal of 27728601318 is 81310682772.

27728601318 is a `hidden beast` number, since 2 + 7 + 7 + 2 + 8 + 601 + 31 + 8 = 666.

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, 23339980 + ... + 23341167.

It is an arithmetic number, because the mean of its divisors is an integer number (2100651660).

Almost surely, 2^27728601318 is an apocalyptic number.

27728601318 is an abundant number, since it is smaller than the sum of its proper divisors (39492251802).

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

27728601318 is a wasteful number, since it uses less digits than its factorization.

27728601318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46681169 (or 46681163 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 45.

The spelling of 27728601318 in words is "twenty-seven billion, seven hundred twenty-eight million, six hundred one thousand, three hundred eighteen".