27750550555 has 16 divisors (see below), whose sum is σ = 40985429184. Its totient is φ = 17565183360.

The previous prime is 27750550549. The next prime is 27750550601. The reversal of 27750550555 is 55505505772.

It is not a de Polignac number, because 27750550555 - 2³ = 27750550547 is a prime.

It is a super-2 number, since 2×27750550555² (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 15 ways as a sum of consecutive naturals, for example, 30494656 + ... + 30495565.

It is an arithmetic number, because the mean of its divisors is an integer number (2561589324).

Almost surely, 2^27750550555 is an apocalyptic number.

27750550555 is a deficient number, since it is larger than the sum of its proper divisors (13234878629).

27750550555 is a wasteful number, since it uses less digits than its factorization.

27750550555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60990246.

The product of its (nonzero) digits is 1531250, while the sum is 46.

The spelling of 27750550555 in words is "twenty-seven billion, seven hundred fifty million, five hundred fifty thousand, five hundred fifty-five".