800315866545 has 16 divisors (see below), whose sum is σ = 1379005801152. Its totient is φ = 394001657280.

The previous prime is 800315866543. The next prime is 800315866549. The reversal of 800315866545 is 545668513008.

It is a happy number.

It is not a de Polignac number, because 800315866545 - 2¹ = 800315866543 is a prime.

It is not an unprimeable number, because it can be changed into a prime (800315866541) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 2052091771 + ... + 2052092160.

It is an arithmetic number, because the mean of its divisors is an integer number (86187862572).

Almost surely, 2^800315866545 is an apocalyptic number.

It is an amenable number.

800315866545 is a deficient number, since it is larger than the sum of its proper divisors (578689934607).

800315866545 is a wasteful number, since it uses less digits than its factorization.

800315866545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4104183952.

The product of its (nonzero) digits is 3456000, while the sum is 51.

The spelling of 800315866545 in words is "eight hundred billion, three hundred fifteen million, eight hundred sixty-six thousand, five hundred forty-five".