52170330320 has 80 divisors (see below), whose sum is σ = 128538090000. Its totient is φ = 19624230912.

The previous prime is 52170330293. The next prime is 52170330341. The reversal of 52170330320 is 2303307125.

It can be written as a sum of positive squares in 8 ways, for example, as 3535967296 + 48634363024 = 59464^2 + 220532^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×52170330320² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 52170330320.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1683284 + ... + 1713996.

It is an arithmetic number, because the mean of its divisors is an integer number (1606726125).

Almost surely, 2^52170330320 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 52170330320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64269045000).

52170330320 is an abundant number, since it is smaller than the sum of its proper divisors (76367759680).

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

52170330320 is a wasteful number, since it uses less digits than its factorization.

52170330320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31992 (or 31986 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 26.

Adding to 52170330320 its reverse (2303307125), we get a palindrome (54473637445).

The spelling of 52170330320 in words is "fifty-two billion, one hundred seventy million, three hundred thirty thousand, three hundred twenty".