53512521440000 has 360 divisors, whose sum is σ = 157805753619360. Its totient is φ = 17714479104000.

The previous prime is 53512521439999. The next prime is 53512521440003. The reversal of 53512521440000 is 4412521535.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (53512521440003) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 31656224 + ... + 33303776.

Almost surely, 2^{53512521440000} is an apocalyptic number.

53512521440000 is a gapful number since it is divisible by the number (50) 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 53512521440000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78902876809680).

53512521440000 is an abundant number, since it is smaller than the sum of its proper divisors (104293232179360).

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

53512521440000 is an equidigital number, since it uses as much as digits as its factorization.

53512521440000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1647625 (or 1647596 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 32.

Adding to 53512521440000 its reverse (4412521535), we get a palindrome (53516933961535).

The spelling of 53512521440000 in words is "fifty-three trillion, five hundred twelve billion, five hundred twenty-one million, four hundred forty thousand".