27549085840 has 20 divisors (see below), whose sum is σ = 64051624764. Its totient is φ = 11019634304.

The previous prime is 27549085831. The next prime is 27549085841. The reversal of 27549085840 is 4858094572.

It can be written as a sum of positive squares in 2 ways, for example, as 5900083344 + 21649002496 = 76812^2 + 147136^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (27549085841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 172181707 + ... + 172181866.

Almost surely, 2^27549085840 is an apocalyptic number.

27549085840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27549085840 is an abundant number, since it is smaller than the sum of its proper divisors (36502538924).

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

27549085840 is a wasteful number, since it uses less digits than its factorization.

27549085840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344363586 (or 344363580 counting only the distinct ones).

The product of its (nonzero) digits is 3225600, while the sum is 52.

The spelling of 27549085840 in words is "twenty-seven billion, five hundred forty-nine million, eighty-five thousand, eight hundred forty".