11521553304 has 64 divisors (see below), whose sum is σ = 29540505600. Its totient is φ = 3742989824.

The previous prime is 11521553291. The next prime is 11521553311. The reversal of 11521553304 is 40335512511.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 248224 + ... + 290960.

It is an arithmetic number, because the mean of its divisors is an integer number (461570400).

Almost surely, 2^11521553304 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 11521553304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14770252800).

11521553304 is an abundant number, since it is smaller than the sum of its proper divisors (18018952296).

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

11521553304 is a wasteful number, since it uses less digits than its factorization.

11521553304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43032 (or 43028 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 30.

The spelling of 11521553304 in words is "eleven billion, five hundred twenty-one million, five hundred fifty-three thousand, three hundred four".