8215842447911 has 12 divisors (see below), whose sum is σ = 9559914407568. Its totient is φ = 7040153881152.

The previous prime is 8215842447859. The next prime is 8215842447931. The reversal of 8215842447911 is 1197442485128.

It is not a de Polignac number, because 8215842447911 - 2¹⁴ = 8215842431527 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8215842447931) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23596706 + ... + 23942351.

It is an arithmetic number, because the mean of its divisors is an integer number (796659533964).

Almost surely, 2^{8215842447911} is an apocalyptic number.

8215842447911 is a deficient number, since it is larger than the sum of its proper divisors (1344071959657).

8215842447911 is a wasteful number, since it uses less digits than its factorization.

8215842447911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47542598 (or 47542591 counting only the distinct ones).

The product of its digits is 5160960, while the sum is 56.

The spelling of 8215842447911 in words is "eight trillion, two hundred fifteen billion, eight hundred forty-two million, four hundred forty-seven thousand, nine hundred eleven".