845406507563 has 8 divisors (see below), whose sum is σ = 870618163200. Its totient is φ = 820557609768.

The previous prime is 845406507527. The next prime is 845406507611. The reversal of 845406507563 is 365705604548.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 845406507563 - 2²⁴ = 845389730347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (845406507263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90684731 + ... + 90694052.

It is an arithmetic number, because the mean of its divisors is an integer number (108827270400).

Almost surely, 2^845406507563 is an apocalyptic number.

845406507563 is a deficient number, since it is larger than the sum of its proper divisors (25211655637).

845406507563 is a wasteful number, since it uses less digits than its factorization.

845406507563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181378921.

The product of its (nonzero) digits is 12096000, while the sum is 53.

The spelling of 845406507563 in words is "eight hundred forty-five billion, four hundred six million, five hundred seven thousand, five hundred sixty-three".