1155115152555 has 256 divisors, whose sum is σ = 2437461196800. Its totient is φ = 453518714880.

The previous prime is 1155115152553. The next prime is 1155115152559. The reversal of 1155115152555 is 5552515115511.

It is not a de Polignac number, because 1155115152555 - 2¹ = 1155115152553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1155115152553) by changing a digit.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 731547756 + ... + 731549334.

It is an arithmetic number, because the mean of its divisors is an integer number (9521332800).

Almost surely, 2^{1155115152555} is an apocalyptic number.

1155115152555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1155115152555 is an abundant number, since it is smaller than the sum of its proper divisors (1282346044245).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1155115152555 is a wasteful number, since it uses less digits than its factorization.

1155115152555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2114.

The product of its digits is 156250, while the sum is 42.

The spelling of 1155115152555 in words is "one trillion, one hundred fifty-five billion, one hundred fifteen million, one hundred fifty-two thousand, five hundred fifty-five".