520530655650331 has 4 divisors (see below), whose sum is σ = 520807976193312. Its totient is φ = 520253335107352.

The previous prime is 520530655650293. The next prime is 520530655650347. The reversal of 520530655650331 is 133056556035025.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 520530655650331 - 2¹⁹ = 520530655126043 is a prime.

It is a super-2 number, since 2×520530655650331² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520530655653331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138660268675 + ... + 138660272428.

It is an arithmetic number, because the mean of its divisors is an integer number (130201994048328).

Almost surely, 2^{520530655650331} is an apocalyptic number.

520530655650331 is a deficient number, since it is larger than the sum of its proper divisors (277320542981).

520530655650331 is a wasteful number, since it uses less digits than its factorization.

520530655650331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277320542980.

The product of its (nonzero) digits is 6075000, while the sum is 49.

The spelling of 520530655650331 in words is "five hundred twenty trillion, five hundred thirty billion, six hundred fifty-five million, six hundred fifty thousand, three hundred thirty-one".