845252218817 has 8 divisors (see below), whose sum is σ = 877086584832. Its totient is φ = 813703363200.

The previous prime is 845252218799. The next prime is 845252218819. The reversal of 845252218817 is 718812252548.

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 845252218817 - 2⁶ = 845252218753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (845252218819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71371568 + ... + 71383409.

It is an arithmetic number, because the mean of its divisors is an integer number (109635823104).

Almost surely, 2^845252218817 is an apocalyptic number.

It is an amenable number.

845252218817 is a deficient number, since it is larger than the sum of its proper divisors (31834366015).

845252218817 is a wasteful number, since it uses less digits than its factorization.

845252218817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142755199.

The product of its digits is 2867200, while the sum is 53.

The spelling of 845252218817 in words is "eight hundred forty-five billion, two hundred fifty-two million, two hundred eighteen thousand, eight hundred seventeen".