27555505502553 has 24 divisors (see below), whose sum is σ = 45999559756800. Its totient is φ = 15569081757504.

The previous prime is 27555505502549. The next prime is 27555505502599. The reversal of 27555505502553 is 35520550555572.

It is not a de Polignac number, because 27555505502553 - 2² = 27555505502549 is a prime.

It is a super-2 number, since 2×27555505502553² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 27555505502553.

It is not an unprimeable number, because it can be changed into a prime (27555505502353) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2457235833 + ... + 2457247046.

It is an arithmetic number, because the mean of its divisors is an integer number (1916648323200).

Almost surely, 2^{27555505502553} is an apocalyptic number.

It is an amenable number.

27555505502553 is a deficient number, since it is larger than the sum of its proper divisors (18444054254247).

27555505502553 is a wasteful number, since it uses less digits than its factorization.

27555505502553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4914482981 (or 4914482978 counting only the distinct ones).

The product of its (nonzero) digits is 32812500, while the sum is 54.

The spelling of 27555505502553 in words is "twenty-seven trillion, five hundred fifty-five billion, five hundred five million, five hundred two thousand, five hundred fifty-three".