5500505555081 has 2 divisors, whose sum is σ = 5500505555082. Its totient is φ = 5500505555080.

The previous prime is 5500505555057. The next prime is 5500505555123. The reversal of 5500505555081 is 1805555050055.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5495700292681 + 4805262400 = 2344291^2 + 69320^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5500505555081 is a prime.

It is a super-2 number, since 2×5500505555081² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (5500505555981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2750252777540 + 2750252777541.

It is an arithmetic number, because the mean of its divisors is an integer number (2750252777541).

Almost surely, 2^{5500505555081} is an apocalyptic number.

It is an amenable number.

5500505555081 is a deficient number, since it is larger than the sum of its proper divisors (1).

5500505555081 is an equidigital number, since it uses as much as digits as its factorization.

5500505555081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 625000, while the sum is 44.

The spelling of 5500505555081 in words is "five trillion, five hundred billion, five hundred five million, five hundred fifty-five thousand, eighty-one".