11573321760 has 1728 divisors, whose sum is σ = 57220660224. Its totient is φ = 2090188800.

The previous prime is 11573321719. The next prime is 11573321779. The reversal of 11573321760 is 6712337511.

11573321760 is a `hidden beast` number, since 1 + 1 + 573 + 3 + 21 + 7 + 60 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

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 287 ways as a sum of consecutive naturals, for example, 312792462 + ... + 312792498.

It is an arithmetic number, because the mean of its divisors is an integer number (33113808).

Almost surely, 2^11573321760 is an apocalyptic number.

11573321760 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 11573321760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28610330112).

11573321760 is an abundant number, since it is smaller than the sum of its proper divisors (45647338464).

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

11573321760 is a wasteful number, since it uses less digits than its factorization.

11573321760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127 (or 109 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 36.

It can be divided in two parts, 11573 and 321760, that added together give a palindrome (333333).

The spelling of 11573321760 in words is "eleven billion, five hundred seventy-three million, three hundred twenty-one thousand, seven hundred sixty".