520009784357 has 16 divisors (see below), whose sum is σ = 634557665280. Its totient is φ = 416428456752.

The previous prime is 520009784341. The next prime is 520009784401. The reversal of 520009784357 is 753487900025.

It is not a de Polignac number, because 520009784357 - 2⁴ = 520009784341 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520009784857) 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, 37549757 + ... + 37563602.

It is an arithmetic number, because the mean of its divisors is an integer number (39659854080).

Almost surely, 2^520009784357 is an apocalyptic number.

It is an amenable number.

520009784357 is a deficient number, since it is larger than the sum of its proper divisors (114547880923).

520009784357 is a wasteful number, since it uses less digits than its factorization.

520009784357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75113432.

The product of its (nonzero) digits is 2116800, while the sum is 50.

The spelling of 520009784357 in words is "five hundred twenty billion, nine million, seven hundred eighty-four thousand, three hundred fifty-seven".