53321247644 has 24 divisors (see below), whose sum is σ = 106766980320. Its totient is φ = 22825287936.

The previous prime is 53321247613. The next prime is 53321247649. The reversal of 53321247644 is 44674212335.

53321247644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53321247649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1087049 + ... + 1135040.

It is an arithmetic number, because the mean of its divisors is an integer number (4448624180).

Almost surely, 2^53321247644 is an apocalyptic number.

It is an amenable number.

53321247644 is an abundant number, since it is smaller than the sum of its proper divisors (53445732676).

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

53321247644 is a wasteful number, since it uses less digits than its factorization.

53321247644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2222957 (or 2222955 counting only the distinct ones).

The product of its digits is 483840, while the sum is 41.

Adding to 53321247644 its reverse (44674212335), we get a palindrome (97995459979).

The spelling of 53321247644 in words is "fifty-three billion, three hundred twenty-one million, two hundred forty-seven thousand, six hundred forty-four".