1131003660544 has 72 divisors (see below), whose sum is σ = 2282102534880. Its totient is φ = 559367897088.

The previous prime is 1131003660529. The next prime is 1131003660551. The reversal of 1131003660544 is 4450663001311.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49727127 + ... + 49749865.

It is an arithmetic number, because the mean of its divisors is an integer number (31695868540).

Almost surely, 2^{1131003660544} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1131003660544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1141051267440).

1131003660544 is an abundant number, since it is smaller than the sum of its proper divisors (1151098874336).

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

1131003660544 is an equidigital number, since it uses as much as digits as its factorization.

1131003660544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24855 (or 24841 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 34.

Adding to 1131003660544 its reverse (4450663001311), we get a palindrome (5581666661855).

The spelling of 1131003660544 in words is "one trillion, one hundred thirty-one billion, three million, six hundred sixty thousand, five hundred forty-four".