1155144530240 has 56 divisors (see below), whose sum is σ = 2750782463880. Its totient is φ = 462041929728.

The previous prime is 1155144530213. The next prime is 1155144530299. The reversal of 1155144530240 is 420354415511.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 103436851456 + 1051707678784 = 321616^2 + 1025528^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1155144530240.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14864606 + ... + 14942114.

Almost surely, 2^{1155144530240} is an apocalyptic number.

1155144530240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1155144530240 is an abundant number, since it is smaller than the sum of its proper divisors (1595637933640).

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

1155144530240 is an equidigital number, since it uses as much as digits as its factorization.

1155144530240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124099 (or 124089 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 35.

Adding to 1155144530240 its reverse (420354415511), we get a palindrome (1575498945751).

The spelling of 1155144530240 in words is "one trillion, one hundred fifty-five billion, one hundred forty-four million, five hundred thirty thousand, two hundred forty".