11313021552 has 160 divisors (see below), whose sum is σ = 35965555200. Its totient is φ = 2990505984.

The previous prime is 11313021497. The next prime is 11313021563. The reversal of 11313021552 is 25512031311.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 320224 + ... + 353792.

It is an arithmetic number, because the mean of its divisors is an integer number (224784720).

Almost surely, 2^11313021552 is an apocalyptic number.

11313021552 is a gapful number since it is divisible by the number (12) 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 11313021552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17982777600).

11313021552 is an abundant number, since it is smaller than the sum of its proper divisors (24652533648).

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

11313021552 is a wasteful number, since it uses less digits than its factorization.

11313021552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33663 (or 33657 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 24.

Adding to 11313021552 its reverse (25512031311), we get a palindrome (36825052863).

The spelling of 11313021552 in words is "eleven billion, three hundred thirteen million, twenty-one thousand, five hundred fifty-two".