52646223440 has 20 divisors (see below), whose sum is σ = 122402469684. Its totient is φ = 21058489344.

The previous prime is 52646223419. The next prime is 52646223499. The reversal of 52646223440 is 4432264625.

It can be written as a sum of positive squares in 2 ways, for example, as 18444899344 + 34201324096 = 135812^2 + 184936^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 52646223394 and 52646223403.

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 3 ways as a sum of consecutive naturals, for example, 329038817 + ... + 329038976.

Almost surely, 2^52646223440 is an apocalyptic number.

It is an amenable number.

52646223440 is an abundant number, since it is smaller than the sum of its proper divisors (69756246244).

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

52646223440 is a wasteful number, since it uses less digits than its factorization.

52646223440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 658077806 (or 658077800 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 38.

The spelling of 52646223440 in words is "fifty-two billion, six hundred forty-six million, two hundred twenty-three thousand, four hundred forty".