5172512565555 has 32 divisors (see below), whose sum is σ = 9199557496320. Its totient is φ = 2757479487840.

The previous prime is 5172512565547. The next prime is 5172512565557. The reversal of 5172512565555 is 5555652152715.

5172512565555 is a `hidden beast` number, since 5 + 1 + 7 + 2 + 5 + 1 + 25 + 65 + 555 = 666.

It is not a de Polignac number, because 5172512565555 - 2³ = 5172512565547 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5172512565557) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 7977697 + ... + 8601666.

It is an arithmetic number, because the mean of its divisors is an integer number (287486171760).

Almost surely, 2^{5172512565555} is an apocalyptic number.

5172512565555 is a deficient number, since it is larger than the sum of its proper divisors (4027044930765).

5172512565555 is a wasteful number, since it uses less digits than its factorization.

5172512565555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16581688 (or 16581682 counting only the distinct ones).

The product of its digits is 13125000, while the sum is 54.

The spelling of 5172512565555 in words is "five trillion, one hundred seventy-two billion, five hundred twelve million, five hundred sixty-five thousand, five hundred fifty-five".