1155540841216 has 144 divisors (see below), whose sum is σ = 2429437570560. Its totient is φ = 547784294400.

The previous prime is 1155540841181. The next prime is 1155540841369. The reversal of 1155540841216 is 6121480455511.

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, 126270241 + ... + 126279391.

It is an arithmetic number, because the mean of its divisors is an integer number (16871094240).

Almost surely, 2^{1155540841216} is an apocalyptic number.

1155540841216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1155540841216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1214718785280).

1155540841216 is an abundant number, since it is smaller than the sum of its proper divisors (1273896729344).

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

1155540841216 is an equidigital number, since it uses as much as digits as its factorization.

1155540841216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9502 (or 9488 counting only the distinct ones).

The product of its (nonzero) digits is 192000, while the sum is 43.

The spelling of 1155540841216 in words is "one trillion, one hundred fifty-five billion, five hundred forty million, eight hundred forty-one thousand, two hundred sixteen".