52168387216 has 135 divisors (see below), whose sum is σ = 115709896393. Its totient is φ = 22767310720.

The previous prime is 52168387211. The next prime is 52168387223. The reversal of 52168387216 is 61278386125.

It is a happy number.

The square root of 52168387216 is 228404.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 27355836816 + 24812550400 = 165396^2 + 157520^2 .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 52168387216.

It is not an unprimeable number, because it can be changed into a prime (52168387211) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 291443415 + ... + 291443593.

Almost surely, 2^52168387216 is an apocalyptic number.

52168387216 is the 228404-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52168387216

52168387216 is an abundant number, since it is smaller than the sum of its proper divisors (63541509177).

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

52168387216 is a wasteful number, since it uses less digits than its factorization.

52168387216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446 (or 221 counting only the distinct ones).

The product of its digits is 967680, while the sum is 49.

Multiplying 52168387216 by its sum of digits (49), we get a square (2556250973584 = 1598828²).

The spelling of 52168387216 in words is "fifty-two billion, one hundred sixty-eight million, three hundred eighty-seven thousand, two hundred sixteen".