53440415424 has 504 divisors, whose sum is σ = 176284560816. Its totient is φ = 15344640000.

The previous prime is 53440415423. The next prime is 53440415443. The reversal of 53440415424 is 42451404435.

53440415424 is a `hidden beast` number, since 5 + 34 + 40 + 41 + 542 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (53440415423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 529112974 + ... + 529113074.

It is an arithmetic number, because the mean of its divisors is an integer number (349770954).

Almost surely, 2^53440415424 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 53440415424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88142280408).

53440415424 is an abundant number, since it is smaller than the sum of its proper divisors (122844145392).

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

53440415424 is a wasteful number, since it uses less digits than its factorization.

53440415424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265 (or 215 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 36.

Adding to 53440415424 its reverse (42451404435), we get a palindrome (95891819859).

It can be divided in two parts, 53440 and 415424, that added together give a palindrome (468864).

The spelling of 53440415424 in words is "fifty-three billion, four hundred forty million, four hundred fifteen thousand, four hundred twenty-four".