6520412140256 has 48 divisors (see below), whose sum is σ = 14672875061376. Its totient is φ = 2794091346816.

The previous prime is 6520412140247. The next prime is 6520412140309.

6520412140256 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 237986 + ... + 3619041.

It is an arithmetic number, because the mean of its divisors is an integer number (305684897112).

Almost surely, 2^{6520412140256} is an apocalyptic number.

It is an amenable number.

6520412140256 is an abundant number, since it is smaller than the sum of its proper divisors (8152462921120).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6520412140256 is a wasteful number, since it uses less digits than its factorization.

6520412140256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3864591 (or 3864583 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 38.

The spelling of 6520412140256 in words is "six trillion, five hundred twenty billion, four hundred twelve million, one hundred forty thousand, two hundred fifty-six".