8421337316065 has 16 divisors (see below), whose sum is σ = 10379263684608. Its totient is φ = 6554649335616.

The previous prime is 8421337316059. The next prime is 8421337316069. The reversal of 8421337316065 is 5606137331248.

It is a cyclic number.

It is not a de Polignac number, because 8421337316065 - 2²⁹ = 8420800445153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8421337316069) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2460604 + ... + 4785106.

It is an arithmetic number, because the mean of its divisors is an integer number (648703980288).

Almost surely, 2^{8421337316065} is an apocalyptic number.

It is an amenable number.

8421337316065 is a deficient number, since it is larger than the sum of its proper divisors (1957926368543).

8421337316065 is a wasteful number, since it uses less digits than its factorization.

8421337316065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2344128.

The product of its (nonzero) digits is 2177280, while the sum is 49.

The spelling of 8421337316065 in words is "eight trillion, four hundred twenty-one billion, three hundred thirty-seven million, three hundred sixteen thousand, sixty-five".