6520522504243 has 4 divisors (see below), whose sum is σ = 7113297277368. Its totient is φ = 5927747731120.

The previous prime is 6520522504241. The next prime is 6520522504247. The reversal of 6520522504243 is 3424052250256.

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 6520522504243 - 2¹ = 6520522504241 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6520522504196 and 6520522504205.

It is not an unprimeable number, because it can be changed into a prime (6520522504241) 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, 296387386546 + ... + 296387386567.

It is an arithmetic number, because the mean of its divisors is an integer number (1778324319342).

Almost surely, 2^{6520522504243} is an apocalyptic number.

6520522504243 is a deficient number, since it is larger than the sum of its proper divisors (592774773125).

6520522504243 is a wasteful number, since it uses less digits than its factorization.

6520522504243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 592774773124.

The product of its (nonzero) digits is 576000, while the sum is 40.

Adding to 6520522504243 its reverse (3424052250256), we get a palindrome (9944574754499).

The spelling of 6520522504243 in words is "six trillion, five hundred twenty billion, five hundred twenty-two million, five hundred four thousand, two hundred forty-three".