53403440000 has 160 divisors (see below), whose sum is σ = 134255961840. Its totient is φ = 21150720000.

The previous prime is 53403439987. The next prime is 53403440021. The reversal of 53403440000 is 4430435.

It is a happy number.

53403440000 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 (160).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 8236760 + ... + 8243240.

Almost surely, 2^53403440000 is an apocalyptic number.

53403440000 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 53403440000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67127980920).

53403440000 is an abundant number, since it is smaller than the sum of its proper divisors (80852521840).

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

53403440000 is an equidigital number, since it uses as much as digits as its factorization.

53403440000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6618 (or 6591 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 23.

Adding to 53403440000 its reverse (4430435), we get a palindrome (53407870435).

The spelling of 53403440000 in words is "fifty-three billion, four hundred three million, four hundred forty thousand".