52666841640 has 256 divisors, whose sum is σ = 188730777600. Its totient is φ = 11495937024.

The previous prime is 52666841609. The next prime is 52666841641. The reversal of 52666841640 is 4614866625.

It is a self number, because there is not a number n which added to its sum of digits gives 52666841640.

It is not an unprimeable number, because it can be changed into a prime (52666841641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 14159701 + ... + 14163419.

It is an arithmetic number, because the mean of its divisors is an integer number (737229600).

Almost surely, 2^52666841640 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 52666841640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94365388800).

52666841640 is an abundant number, since it is smaller than the sum of its proper divisors (136063935960).

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

52666841640 is a wasteful number, since it uses less digits than its factorization.

52666841640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4496 (or 4492 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 48.

The spelling of 52666841640 in words is "fifty-two billion, six hundred sixty-six million, eight hundred forty-one thousand, six hundred forty".