27555055505503 has 16 divisors (see below), whose sum is σ = 29828784366720. Its totient is φ = 25372879343136.

The previous prime is 27555055505431. The next prime is 27555055505569. The reversal of 27555055505503 is 30550555055572.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-27555055505503 is a prime.

It is a super-2 number, since 2×27555055505503² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27555055505573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 127759125 + ... + 127974622.

It is an arithmetic number, because the mean of its divisors is an integer number (1864299022920).

Almost surely, 2^{27555055505503} is an apocalyptic number.

27555055505503 is a deficient number, since it is larger than the sum of its proper divisors (2273728861217).

27555055505503 is a wasteful number, since it uses less digits than its factorization.

27555055505503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255733926.

The product of its (nonzero) digits is 16406250, while the sum is 52.

The spelling of 27555055505503 in words is "twenty-seven trillion, five hundred fifty-five billion, fifty-five million, five hundred five thousand, five hundred three".