53533145440 has 24 divisors (see below), whose sum is σ = 126472056480. Its totient is φ = 21413258112.

The previous prime is 53533145389. The next prime is 53533145447. The reversal of 53533145440 is 4454133535.

It is a self number, because there is not a number n which added to its sum of digits gives 53533145440.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53533145447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 167290920 + ... + 167291239.

It is an arithmetic number, because the mean of its divisors is an integer number (5269669020).

Almost surely, 2^53533145440 is an apocalyptic number.

It is an amenable number.

53533145440 is an abundant number, since it is smaller than the sum of its proper divisors (72938911040).

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

53533145440 is a wasteful number, since it uses less digits than its factorization.

53533145440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334582174 (or 334582166 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 37.

Adding to 53533145440 its reverse (4454133535), we get a palindrome (57987278975).

The spelling of 53533145440 in words is "fifty-three billion, five hundred thirty-three million, one hundred forty-five thousand, four hundred forty".