53613443520 has 672 divisors, whose sum is σ = 234320486400. Its totient is φ = 10945290240.

The previous prime is 53613443501. The next prime is 53613443531. The reversal of 53613443520 is 2534431635.

53613443520 is a `hidden beast` number, since 5 + 3 + 61 + 34 + 43 + 520 = 666.

53613443520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (672).

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 polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 8121181 + ... + 8127779.

It is an arithmetic number, because the mean of its divisors is an integer number (348691200).

Almost surely, 2^53613443520 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 53613443520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117160243200).

53613443520 is an abundant number, since it is smaller than the sum of its proper divisors (180707042880).

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

53613443520 is a wasteful number, since it uses less digits than its factorization.

53613443520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6673 (or 6660 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 36.

The spelling of 53613443520 in words is "fifty-three billion, six hundred thirteen million, four hundred forty-three thousand, five hundred twenty".