53144441544 has 128 divisors (see below), whose sum is σ = 138507264000. Its totient is φ = 16974144000.

The previous prime is 53144441543. The next prime is 53144441551. The reversal of 53144441544 is 44514444135.

It is not an unprimeable number, because it can be changed into a prime (53144441543) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 47071572 + ... + 47072700.

It is an arithmetic number, because the mean of its divisors is an integer number (1082088000).

Almost surely, 2^53144441544 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 53144441544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69253632000).

53144441544 is an abundant number, since it is smaller than the sum of its proper divisors (85362822456).

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

53144441544 is a wasteful number, since it uses less digits than its factorization.

53144441544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1739 (or 1735 counting only the distinct ones).

The product of its digits is 307200, while the sum is 39.

Adding to 53144441544 its reverse (44514444135), we get a palindrome (97658885679).

The spelling of 53144441544 in words is "fifty-three billion, one hundred forty-four million, four hundred forty-one thousand, five hundred forty-four".