27745378629660 has 144 divisors (see below), whose sum is σ = 88348325345280. Its totient is φ = 7038740039040.

The previous prime is 27745378629613. The next prime is 27745378629743. The reversal of 27745378629660 is 6692687354772.

27745378629660 is a `hidden beast` number, since 2 + 7 + 7 + 4 + 537 + 8 + 6 + 29 + 6 + 60 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 41808832 + ... + 42467271.

It is an arithmetic number, because the mean of its divisors is an integer number (613530037120).

Almost surely, 2^{27745378629660} is an apocalyptic number.

27745378629660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27745378629660 is an abundant number, since it is smaller than the sum of its proper divisors (60602946715620).

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

27745378629660 is a wasteful number, since it uses less digits than its factorization.

27745378629660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84276208 (or 84276203 counting only the distinct ones).

The product of its (nonzero) digits is 1280240640, while the sum is 72.

The spelling of 27745378629660 in words is "twenty-seven trillion, seven hundred forty-five billion, three hundred seventy-eight million, six hundred twenty-nine thousand, six hundred sixty".