53243402020 has 48 divisors (see below), whose sum is σ = 115867891440. Its totient is φ = 20527202304.

The previous prime is 53243401987. The next prime is 53243402057. The reversal of 53243402020 is 2020434235.

53243402020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 78110244 + 53165291776 = 8838^2 + 230576^2 .

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, 255112 + ... + 414208.

It is an arithmetic number, because the mean of its divisors is an integer number (2413914405).

Almost surely, 2^53243402020 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 53243402020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57933945720).

53243402020 is an abundant number, since it is smaller than the sum of its proper divisors (62624489420).

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

53243402020 is a wasteful number, since it uses less digits than its factorization.

53243402020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159712 (or 159710 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 25.

Adding to 53243402020 its reverse (2020434235), we get a palindrome (55263836255).

The spelling of 53243402020 in words is "fifty-three billion, two hundred forty-three million, four hundred two thousand, twenty".