53440400412 has 288 divisors, whose sum is σ = 164309483520. Its totient is φ = 14322147840.

The previous prime is 53440400399. The next prime is 53440400467. The reversal of 53440400412 is 21400404435.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 53925237 + ... + 53926227.

It is an arithmetic number, because the mean of its divisors is an integer number (570519040).

Almost surely, 2^53440400412 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 53440400412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82154741760).

53440400412 is an abundant number, since it is smaller than the sum of its proper divisors (110869083108).

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

53440400412 is a wasteful number, since it uses less digits than its factorization.

53440400412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1241 (or 1236 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

Adding to 53440400412 its reverse (21400404435), we get a palindrome (74840804847).

The spelling of 53440400412 in words is "fifty-three billion, four hundred forty million, four hundred thousand, four hundred twelve".