520493440897 has 4 divisors (see below), whose sum is σ = 523610168256. Its totient is φ = 517376713540.

The previous prime is 520493440891. The next prime is 520493440937. The reversal of 520493440897 is 798044394025.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 520493440897 - 2¹¹ = 520493438849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520493440891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1558363429 + ... + 1558363762.

It is an arithmetic number, because the mean of its divisors is an integer number (130902542064).

Almost surely, 2^520493440897 is an apocalyptic number.

It is an amenable number.

520493440897 is a deficient number, since it is larger than the sum of its proper divisors (3116727359).

520493440897 is a wasteful number, since it uses less digits than its factorization.

520493440897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3116727358.

The product of its (nonzero) digits is 8709120, while the sum is 55.

The spelling of 520493440897 in words is "five hundred twenty billion, four hundred ninety-three million, four hundred forty thousand, eight hundred ninety-seven".