520573505377 has 4 divisors (see below), whose sum is σ = 521025785856. Its totient is φ = 520121224900.

The previous prime is 520573505369. The next prime is 520573505401. The reversal of 520573505377 is 773505375025.

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 520573505377 - 2³ = 520573505369 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 520573505377.

It is not an unprimeable number, because it can be changed into a prime (520573505477) 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, 226138513 + ... + 226140814.

It is an arithmetic number, because the mean of its divisors is an integer number (130256446464).

Almost surely, 2^520573505377 is an apocalyptic number.

It is an amenable number.

520573505377 is a deficient number, since it is larger than the sum of its proper divisors (452280479).

520573505377 is a wasteful number, since it uses less digits than its factorization.

520573505377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452280478.

The product of its (nonzero) digits is 3858750, while the sum is 49.

The spelling of 520573505377 in words is "five hundred twenty billion, five hundred seventy-three million, five hundred five thousand, three hundred seventy-seven".