1155514412240 has 120 divisors (see below), whose sum is σ = 2786842155240. Its totient is φ = 445045629952.

The previous prime is 1155514412201. The next prime is 1155514412243. The reversal of 1155514412240 is 422144155511.

It can be written as a sum of positive squares in 4 ways, for example, as 1359544384 + 1154154867856 = 36872^2 + 1074316^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1155514412240.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155514412243) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 407300102 + ... + 407302938.

It is an arithmetic number, because the mean of its divisors is an integer number (23223684627).

Almost surely, 2^{1155514412240} is an apocalyptic number.

1155514412240 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 1155514412240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1393421077620).

1155514412240 is an abundant number, since it is smaller than the sum of its proper divisors (1631327743000).

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

1155514412240 is an equidigital number, since it uses as much as digits as its factorization.

1155514412240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3717 (or 3292 counting only the distinct ones).

The product of its (nonzero) digits is 32000, while the sum is 35.

Adding to 1155514412240 its reverse (422144155511), we get a palindrome (1577658567751).

The spelling of 1155514412240 in words is "one trillion, one hundred fifty-five billion, five hundred fourteen million, four hundred twelve thousand, two hundred forty".