52761339666 has 144 divisors (see below), whose sum is σ = 140795928000. Its totient is φ = 14197934016.

The previous prime is 52761339641. The next prime is 52761339667. The reversal of 52761339666 is 66693316725.

It is not an unprimeable number, because it can be changed into a prime (52761339667) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2890035 + ... + 2908233.

It is an arithmetic number, because the mean of its divisors is an integer number (977749500).

Almost surely, 2^52761339666 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52761339666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70397964000).

52761339666 is an abundant number, since it is smaller than the sum of its proper divisors (88034588334).

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

52761339666 is a wasteful number, since it uses less digits than its factorization.

52761339666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18413 (or 18403 counting only the distinct ones).

The product of its digits is 7348320, while the sum is 54.

The spelling of 52761339666 in words is "fifty-two billion, seven hundred sixty-one million, three hundred thirty-nine thousand, six hundred sixty-six".