27885675880 has 32 divisors (see below), whose sum is σ = 63602267400. Its totient is φ = 11001470976.

The previous prime is 27885675833. The next prime is 27885675911. The reversal of 27885675880 is 8857658872.

It can be written as a sum of positive squares in 4 ways, for example, as 14525552484 + 13360123396 = 120522^2 + 115586^2 .

It is a super-2 number, since 2×27885675880² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4772025 + ... + 4777864.

Almost surely, 2^27885675880 is an apocalyptic number.

27885675880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27885675880 is an abundant number, since it is smaller than the sum of its proper divisors (35716591520).

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

27885675880 is a wasteful number, since it uses less digits than its factorization.

27885675880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9549973 (or 9549969 counting only the distinct ones).

The product of its (nonzero) digits is 60211200, while the sum is 64.

The spelling of 27885675880 in words is "twenty-seven billion, eight hundred eighty-five million, six hundred seventy-five thousand, eight hundred eighty".