5509023931161 has 27 divisors (see below), whose sum is σ = 7989718235733. Its totient is φ = 3657862835640.

The previous prime is 5509023931141. The next prime is 5509023931163. The reversal of 5509023931161 is 1611393209055.

The square root of 5509023931161 is 2347131.

It is a perfect power (a square), and thus also a powerful number.

5509023931161 is a `hidden beast` number, since 5 + 509 + 0 + 23 + 9 + 3 + 116 + 1 = 666.

It is not a de Polignac number, because 5509023931161 - 2²¹ = 5509021834009 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5509023931163) 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 26 ways as a sum of consecutive naturals, for example, 1908216060 + ... + 1908218946.

Almost surely, 2^{5509023931161} is an apocalyptic number.

5509023931161 is the 2347131-st square number.

5509023931161 is the 1173566-th centered octagonal number.

It is an amenable number.

5509023931161 is a deficient number, since it is larger than the sum of its proper divisors (2480694304572).

5509023931161 is an frugal number, since it uses more digits than its factorization.

5509023931161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6322 (or 3161 counting only the distinct ones).

The product of its (nonzero) digits is 218700, while the sum is 45.

The spelling of 5509023931161 in words is "five trillion, five hundred nine billion, twenty-three million, nine hundred thirty-one thousand, one hundred sixty-one".