27755555503 has 4 divisors (see below), whose sum is σ = 29890598248. Its totient is φ = 25620512760.

The previous prime is 27755555491. The next prime is 27755555533. The reversal of 27755555503 is 30555555772.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 27755555503 - 2³³ = 19165620911 is a prime.

It is a super-2 number, since 2×27755555503² (a number of 22 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 (27755555533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1067521353 + ... + 1067521378.

It is an arithmetic number, because the mean of its divisors is an integer number (7472649562).

Almost surely, 2^27755555503 is an apocalyptic number.

27755555503 is a deficient number, since it is larger than the sum of its proper divisors (2135042745).

27755555503 is a wasteful number, since it uses less digits than its factorization.

27755555503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2135042744.

The product of its (nonzero) digits is 4593750, while the sum is 49.

The spelling of 27755555503 in words is "twenty-seven billion, seven hundred fifty-five million, five hundred fifty-five thousand, five hundred three".