52169641920 has 448 divisors, whose sum is σ = 202879756800. Its totient is φ = 12514590720.

The previous prime is 52169641879. The next prime is 52169642003. The reversal of 52169641920 is 2914696125.

52169641920 is a `hidden beast` number, since 52 + 169 + 6 + 419 + 20 = 666.

It is a super-2 number, since 2×52169641920² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9216051 + ... + 9221709.

It is an arithmetic number, because the mean of its divisors is an integer number (452856600).

Almost surely, 2^52169641920 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 52169641920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101439878400).

52169641920 is an abundant number, since it is smaller than the sum of its proper divisors (150710114880).

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

52169641920 is a wasteful number, since it uses less digits than its factorization.

52169641920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5793 (or 5777 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The spelling of 52169641920 in words is "fifty-two billion, one hundred sixty-nine million, six hundred forty-one thousand, nine hundred twenty".