52056621121624 has 128 divisors (see below), whose sum is σ = 117991157760000. Its totient is φ = 21033252132480.

The previous prime is 52056621121621. The next prime is 52056621121639. The reversal of 52056621121624 is 42612112665025.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52056621121621) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 384173517 + ... + 384308995.

It is an arithmetic number, because the mean of its divisors is an integer number (921805920000).

Almost surely, 2^{52056621121624} 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 52056621121624, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58995578880000).

52056621121624 is an abundant number, since it is smaller than the sum of its proper divisors (65934536638376).

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

52056621121624 is a wasteful number, since it uses less digits than its factorization.

52056621121624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137261 (or 137257 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 43.

Adding to 52056621121624 its reverse (42612112665025), we get a palindrome (94668733786649).

The spelling of 52056621121624 in words is "fifty-two trillion, fifty-six billion, six hundred twenty-one million, one hundred twenty-one thousand, six hundred twenty-four".