1155560312055 has 32 divisors (see below), whose sum is σ = 1894149331200. Its totient is φ = 601217061120.

The previous prime is 1155560311987. The next prime is 1155560312083. The reversal of 1155560312055 is 5502130655511.

It is not a de Polignac number, because 1155560312055 - 2³⁵ = 1121200573687 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 7984164 + ... + 8127606.

It is an arithmetic number, because the mean of its divisors is an integer number (59192166600).

Almost surely, 2^{1155560312055} is an apocalyptic number.

1155560312055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1155560312055 is a deficient number, since it is larger than the sum of its proper divisors (738589019145).

1155560312055 is a wasteful number, since it uses less digits than its factorization.

1155560312055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156591.

The product of its (nonzero) digits is 112500, while the sum is 39.

Adding to 1155560312055 its reverse (5502130655511), we get a palindrome (6657690967566).

The spelling of 1155560312055 in words is "one trillion, one hundred fifty-five billion, five hundred sixty million, three hundred twelve thousand, fifty-five".