816220314449 has 8 divisors (see below), whose sum is σ = 824830274688. Its totient is φ = 807614340480.

The previous prime is 816220314397. The next prime is 816220314557. The reversal of 816220314449 is 944413022618.

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 816220314449 - 2²⁸ = 815951878993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (816220317449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 583997 + ... + 1404810.

It is an arithmetic number, because the mean of its divisors is an integer number (103103784336).

Almost surely, 2^816220314449 is an apocalyptic number.

It is an amenable number.

816220314449 is a deficient number, since it is larger than the sum of its proper divisors (8609960239).

816220314449 is a wasteful number, since it uses less digits than its factorization.

816220314449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1993135.

The product of its (nonzero) digits is 331776, while the sum is 44.

The spelling of 816220314449 in words is "eight hundred sixteen billion, two hundred twenty million, three hundred fourteen thousand, four hundred forty-nine".