27385255872 has 448 divisors, whose sum is σ = 90669465600. Its totient is φ = 8047226880.

The previous prime is 27385255867. The next prime is 27385255907. The reversal of 27385255872 is 27855258372.

27385255872 is a `hidden beast` number, since 2 + 7 + 3 + 8 + 52 + 5 + 587 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 82734747 + ... + 82735077.

It is an arithmetic number, because the mean of its divisors is an integer number (202387200).

Almost surely, 2^27385255872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27385255872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45334732800).

27385255872 is an abundant number, since it is smaller than the sum of its proper divisors (63284209728).

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

27385255872 is a wasteful number, since it uses less digits than its factorization.

27385255872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521 (or 505 counting only the distinct ones).

The product of its digits is 9408000, while the sum is 54.

The spelling of 27385255872 in words is "twenty-seven billion, three hundred eighty-five million, two hundred fifty-five thousand, eight hundred seventy-two".