27750005500 has 48 divisors (see below), whose sum is σ = 69264022464. Its totient is φ = 9514286400.

The previous prime is 27750005497. The next prime is 27750005551. The reversal of 27750005500 is 550005772.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3960787 + ... + 3967786.

It is an arithmetic number, because the mean of its divisors is an integer number (1443000468).

Almost surely, 2^27750005500 is an apocalyptic number.

27750005500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27750005500 is an abundant number, since it is smaller than the sum of its proper divisors (41514016964).

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

27750005500 is a wasteful number, since it uses less digits than its factorization.

27750005500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7928599 (or 7928587 counting only the distinct ones).

The product of its (nonzero) digits is 12250, while the sum is 31.

The spelling of 27750005500 in words is "twenty-seven billion, seven hundred fifty million, five thousand, five hundred".