1155141489920 has 288 divisors, whose sum is σ = 3196771522560. Its totient is φ = 395784069120.

The previous prime is 1155141489907. The next prime is 1155141489949. The reversal of 1155141489920 is 299841415511.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 21670661 + ... + 21723899.

It is an arithmetic number, because the mean of its divisors is an integer number (11099901120).

Almost surely, 2^{1155141489920} is an apocalyptic number.

1155141489920 is a gapful number since it is divisible by the number (10) 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 1155141489920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1598385761280).

1155141489920 is an abundant number, since it is smaller than the sum of its proper divisors (2041630032640).

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

1155141489920 is a wasteful number, since it uses less digits than its factorization.

1155141489920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53361 (or 53347 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 50.

The spelling of 1155141489920 in words is "one trillion, one hundred fifty-five billion, one hundred forty-one million, four hundred eighty-nine thousand, nine hundred twenty".