1155106055505 has 16 divisors (see below), whose sum is σ = 1849367502720. Its totient is φ = 615657291648.

The previous prime is 1155106055503. The next prime is 1155106055513. The reversal of 1155106055505 is 5055506015511.

It is not a de Polignac number, because 1155106055505 - 2¹ = 1155106055503 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1155106055503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24930540 + ... + 24976829.

It is an arithmetic number, because the mean of its divisors is an integer number (115585468920).

Almost surely, 2^{1155106055505} is an apocalyptic number.

1155106055505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1155106055505 is a deficient number, since it is larger than the sum of its proper divisors (694261447215).

1155106055505 is a wasteful number, since it uses less digits than its factorization.

1155106055505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49908920.

The product of its (nonzero) digits is 93750, while the sum is 39.

The spelling of 1155106055505 in words is "one trillion, one hundred fifty-five billion, one hundred six million, fifty-five thousand, five hundred five".