53324433440 has 48 divisors (see below), whose sum is σ = 128044226520. Its totient is φ = 20980101120.

The previous prime is 53324433431. The next prime is 53324433457. The reversal of 53324433440 is 4433442335.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 39240440464 + 14083992976 = 198092^2 + 118676^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 53324433440.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2722025 + ... + 2741544.

Almost surely, 2^53324433440 is an apocalyptic number.

It is an amenable number.

53324433440 is an abundant number, since it is smaller than the sum of its proper divisors (74719793080).

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

53324433440 is a wasteful number, since it uses less digits than its factorization.

53324433440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5463645 (or 5463637 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 35.

Adding to 53324433440 its reverse (4433442335), we get a palindrome (57757875775).

The spelling of 53324433440 in words is "fifty-three billion, three hundred twenty-four million, four hundred thirty-three thousand, four hundred forty".