1155155133255 has 8 divisors (see below), whose sum is σ = 1848248213232. Its totient is φ = 616082737728.

The previous prime is 1155155133193. The next prime is 1155155133317. The reversal of 1155155133255 is 5523315515511.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1155155133193) and next prime (1155155133317).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1155155133255 - 2⁷ = 1155155133127 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 7 ways as a sum of consecutive naturals, for example, 38505171094 + ... + 38505171123.

It is an arithmetic number, because the mean of its divisors is an integer number (231031026654).

Almost surely, 2^{1155155133255} is an apocalyptic number.

1155155133255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1155155133255 is a deficient number, since it is larger than the sum of its proper divisors (693093079977).

1155155133255 is an equidigital number, since it uses as much as digits as its factorization.

1155155133255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77010342225.

The product of its digits is 281250, while the sum is 42.

The spelling of 1155155133255 in words is "one trillion, one hundred fifty-five billion, one hundred fifty-five million, one hundred thirty-three thousand, two hundred fifty-five".