52404432036340 has 48 divisors (see below), whose sum is σ = 110293032547152. Its totient is φ = 20915351387136.

The previous prime is 52404432036289. The next prime is 52404432036343. The reversal of 52404432036340 is 4363023440425.

It can be written as a sum of positive squares in 8 ways, for example, as 12061965165156 + 40342466871184 = 3473034^2 + 6351572^2 .

It is a junction number, because it is equal to n+sod(n) for n = 52404432036293 and 52404432036302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52404432036343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 656550274 + ... + 656630086.

It is an arithmetic number, because the mean of its divisors is an integer number (2297771511399).

Almost surely, 2^{52404432036340} is an apocalyptic number.

It is an amenable number.

52404432036340 is an abundant number, since it is smaller than the sum of its proper divisors (57888600510812).

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

52404432036340 is a wasteful number, since it uses less digits than its factorization.

52404432036340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152116 (or 152114 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 40.

Adding to 52404432036340 its reverse (4363023440425), we get a palindrome (56767455476765).

The spelling of 52404432036340 in words is "fifty-two trillion, four hundred four billion, four hundred thirty-two million, thirty-six thousand, three hundred forty".