6505520507423 has 16 divisors (see below), whose sum is σ = 7635926505984. Its totient is φ = 5425380064800.

The previous prime is 6505520507393. The next prime is 6505520507483. The reversal of 6505520507423 is 3247050255056.

It is a cyclic number.

It is not a de Polignac number, because 6505520507423 - 2⁴⁰ = 5406008879647 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6505520507483) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28101998 + ... + 28332548.

It is an arithmetic number, because the mean of its divisors is an integer number (477245406624).

Almost surely, 2^{6505520507423} is an apocalyptic number.

6505520507423 is a deficient number, since it is larger than the sum of its proper divisors (1130405998561).

6505520507423 is a wasteful number, since it uses less digits than its factorization.

6505520507423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339542.

The product of its (nonzero) digits is 1260000, while the sum is 44.

The spelling of 6505520507423 in words is "six trillion, five hundred five billion, five hundred twenty million, five hundred seven thousand, four hundred twenty-three".