52644688644624 has 160 divisors (see below), whose sum is σ = 143721187921920. Its totient is φ = 16571284494336.

The previous prime is 52644688644623. The next prime is 52644688644631. The reversal of 52644688644624 is 42644688644625.

It is a Harshad number since it is a multiple of its sum of digits (69).

It is not an unprimeable number, because it can be changed into a prime (52644688644623) 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, 1327146039 + ... + 1327185705.

It is an arithmetic number, because the mean of its divisors is an integer number (898257424512).

Almost surely, 2^{52644688644624} 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 52644688644624, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71860593960960).

52644688644624 is an abundant number, since it is smaller than the sum of its proper divisors (91076499277296).

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

52644688644624 is a wasteful number, since it uses less digits than its factorization.

52644688644624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54997 (or 54991 counting only the distinct ones).

The product of its digits is 1698693120, while the sum is 69.

Subtracting from 52644688644624 its reverse (42644688644625), we obtain a palindrome (9999999999999).

The spelling of 52644688644624 in words is "fifty-two trillion, six hundred forty-four billion, six hundred eighty-eight million, six hundred forty-four thousand, six hundred twenty-four".