520549462609 has 4 divisors (see below), whose sum is σ = 567872141040. Its totient is φ = 473226784180.

The previous prime is 520549462597. The next prime is 520549462627. The reversal of 520549462609 is 906264945025.

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 520549462609 - 2³⁷ = 383110509137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520549462649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23661339199 + ... + 23661339220.

It is an arithmetic number, because the mean of its divisors is an integer number (141968035260).

Almost surely, 2^520549462609 is an apocalyptic number.

It is an amenable number.

520549462609 is a deficient number, since it is larger than the sum of its proper divisors (47322678431).

520549462609 is a wasteful number, since it uses less digits than its factorization.

520549462609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47322678430.

The product of its (nonzero) digits is 4665600, while the sum is 52.

The spelling of 520549462609 in words is "five hundred twenty billion, five hundred forty-nine million, four hundred sixty-two thousand, six hundred nine".