27555655655585 has 16 divisors (see below), whose sum is σ = 33532974024192. Its totient is φ = 21733741512000.

The previous prime is 27555655655581. The next prime is 27555655655651. The reversal of 27555655655585 is 58555655655572.

It is not a de Polignac number, because 27555655655585 - 2² = 27555655655581 is a prime.

It is a super-2 number, since 2×27555655655585² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (27555655655581) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27608267 + ... + 28588943.

It is an arithmetic number, because the mean of its divisors is an integer number (2095810876512).

Almost surely, 2^{27555655655585} is an apocalyptic number.

It is an amenable number.

27555655655585 is a deficient number, since it is larger than the sum of its proper divisors (5977318368607).

27555655655585 is an equidigital number, since it uses as much as digits as its factorization.

27555655655585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1059904.

The product of its digits is 7875000000, while the sum is 74.

The spelling of 27555655655585 in words is "twenty-seven trillion, five hundred fifty-five billion, six hundred fifty-five million, six hundred fifty-five thousand, five hundred eighty-five".