52121754720 has 576 divisors, whose sum is σ = 215180763840. Its totient is φ = 11746861056.

The previous prime is 52121754719. The next prime is 52121754779. The reversal of 52121754720 is 2745712125.

52121754720 is a `hidden beast` number, since 5 + 2 + 12 + 175 + 472 + 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 an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 15450954 + ... + 15454326.

It is an arithmetic number, because the mean of its divisors is an integer number (373577715).

Almost surely, 2^52121754720 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 52121754720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107590381920).

52121754720 is an abundant number, since it is smaller than the sum of its proper divisors (163059009120).

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

52121754720 is a wasteful number, since it uses less digits than its factorization.

52121754720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3484 (or 3463 counting only the distinct ones).

The product of its (nonzero) digits is 39200, while the sum is 36.

The spelling of 52121754720 in words is "fifty-two billion, one hundred twenty-one million, seven hundred fifty-four thousand, seven hundred twenty".