27561025560 has 32 divisors (see below), whose sum is σ = 82683077040. Its totient is φ = 7349606784.

The previous prime is 27561025543. The next prime is 27561025573. The reversal of 27561025560 is 6552016572.

It is a super-2 number, since 2×27561025560² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114837487 + ... + 114837726.

Almost surely, 2^27561025560 is an apocalyptic number.

27561025560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27561025560 is an abundant number, since it is smaller than the sum of its proper divisors (55122051480).

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

27561025560 is a wasteful number, since it uses less digits than its factorization.

27561025560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229675227 (or 229675223 counting only the distinct ones).

The product of its (nonzero) digits is 126000, while the sum is 39.

The spelling of 27561025560 in words is "twenty-seven billion, five hundred sixty-one million, twenty-five thousand, five hundred sixty".