1155550165055 has 16 divisors (see below), whose sum is σ = 1629083310624. Its totient is φ = 775753956480.

The previous prime is 1155550165013. The next prime is 1155550165061. The reversal of 1155550165055 is 5505610555511.

It is not a de Polignac number, because 1155550165055 - 2¹⁴ = 1155550148671 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1155550164997 and 1155550165015.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 808076324 + ... + 808077753.

It is an arithmetic number, because the mean of its divisors is an integer number (101817706914).

Almost surely, 2^{1155550165055} is an apocalyptic number.

1155550165055 is a deficient number, since it is larger than the sum of its proper divisors (473533145569).

1155550165055 is a wasteful number, since it uses less digits than its factorization.

1155550165055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1616154106.

The product of its (nonzero) digits is 468750, while the sum is 44.

The spelling of 1155550165055 in words is "one trillion, one hundred fifty-five billion, five hundred fifty million, one hundred sixty-five thousand, fifty-five".