52216421022720 has 616 divisors, whose sum is σ = 189464907830256. Its totient is φ = 13801042870272.

The previous prime is 52216421022713. The next prime is 52216421022721. The reversal of 52216421022720 is 2722012461225.

52216421022720 is a `hidden beast` number, since 5 + 2 + 2 + 1 + 6 + 421 + 0 + 227 + 2 + 0 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52216421022721) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 421708339 + ... + 421832141.

Almost surely, 2^{52216421022720} 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 52216421022720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94732453915128).

52216421022720 is an abundant number, since it is smaller than the sum of its proper divisors (137248486807536).

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

52216421022720 is a wasteful number, since it uses less digits than its factorization.

52216421022720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123959 (or 123926 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

Adding to 52216421022720 its reverse (2722012461225), we get a palindrome (54938433483945).

The spelling of 52216421022720 in words is "fifty-two trillion, two hundred sixteen billion, four hundred twenty-one million, twenty-two thousand, seven hundred twenty".