52171328790 has 384 divisors, whose sum is σ = 171373363200. Its totient is φ = 10743010560.

The previous prime is 52171328779. The next prime is 52171328813. The reversal of 52171328790 is 9782317125.

52171328790 is a `hidden beast` number, since 521 + 7 + 1 + 32 + 8 + 7 + 90 = 666.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 191 ways as a sum of consecutive naturals, for example, 21891939 + ... + 21894321.

It is an arithmetic number, because the mean of its divisors is an integer number (446284800).

Almost surely, 2^52171328790 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52171328790, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85686681600).

52171328790 is an abundant number, since it is smaller than the sum of its proper divisors (119202034410).

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

52171328790 is a wasteful number, since it uses less digits than its factorization.

52171328790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2512 (or 2509 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 45.

The spelling of 52171328790 in words is "fifty-two billion, one hundred seventy-one million, three hundred twenty-eight thousand, seven hundred ninety".