8263816216645 has 16 divisors (see below), whose sum is σ = 10862975027520. Its totient is φ = 5985110188800.

The previous prime is 8263816216633. The next prime is 8263816216651. The reversal of 8263816216645 is 5466126183628.

It is not a de Polignac number, because 8263816216645 - 2¹¹ = 8263816214597 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8263816216645.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 311711235 + ... + 311737744.

It is an arithmetic number, because the mean of its divisors is an integer number (678935939220).

Almost surely, 2^{8263816216645} is an apocalyptic number.

It is an amenable number.

8263816216645 is a deficient number, since it is larger than the sum of its proper divisors (2599158810875).

8263816216645 is a wasteful number, since it uses less digits than its factorization.

8263816216645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 623449236.

The product of its digits is 19906560, while the sum is 58.

The spelling of 8263816216645 in words is "eight trillion, two hundred sixty-three billion, eight hundred sixteen million, two hundred sixteen thousand, six hundred forty-five".