655320445547 has 4 divisors (see below), whose sum is σ = 677917702320. Its totient is φ = 632723188776.

The previous prime is 655320445529. The next prime is 655320445579. The reversal of 655320445547 is 745544023556.

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 655320445547 - 2⁸ = 655320445291 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 655320445495 and 655320445504.

It is not an unprimeable number, because it can be changed into a prime (655325445547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11298628343 + ... + 11298628400.

It is an arithmetic number, because the mean of its divisors is an integer number (169479425580).

Almost surely, 2^655320445547 is an apocalyptic number.

655320445547 is a deficient number, since it is larger than the sum of its proper divisors (22597256773).

655320445547 is a wasteful number, since it uses less digits than its factorization.

655320445547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22597256772.

The product of its (nonzero) digits is 10080000, while the sum is 50.

The spelling of 655320445547 in words is "six hundred fifty-five billion, three hundred twenty million, four hundred forty-five thousand, five hundred forty-seven".