27840551328 has 72 divisors (see below), whose sum is σ = 79193368800. Its totient is φ = 9277628544.

The previous prime is 27840551327. The next prime is 27840551407. The reversal of 27840551328 is 82315504872.

27840551328 is a `hidden beast` number, since 2 + 78 + 4 + 0 + 551 + 3 + 28 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is not an unprimeable number, because it can be changed into a prime (27840551327) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1238493 + ... + 1260771.

It is an arithmetic number, because the mean of its divisors is an integer number (1099907900).

Almost surely, 2^27840551328 is an apocalyptic number.

It is an amenable number.

27840551328 is an abundant number, since it is smaller than the sum of its proper divisors (51352817472).

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

27840551328 is a wasteful number, since it uses less digits than its factorization.

27840551328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26634 (or 26623 counting only the distinct ones).

The product of its (nonzero) digits is 537600, while the sum is 45.

The spelling of 27840551328 in words is "twenty-seven billion, eight hundred forty million, five hundred fifty-one thousand, three hundred twenty-eight".