794008221865 has 8 divisors (see below), whose sum is σ = 970787411208. Its totient is φ = 623221547520.

The previous prime is 794008221841. The next prime is 794008221871. The reversal of 794008221865 is 568122800497.

It can be written as a sum of positive squares in 4 ways, for example, as 140219542681 + 653788679184 = 374459^2 + 808572^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 794008221865 - 2¹⁹ = 794007697577 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1498128456 + ... + 1498128985.

It is an arithmetic number, because the mean of its divisors is an integer number (121348426401).

Almost surely, 2^794008221865 is an apocalyptic number.

It is an amenable number.

794008221865 is a deficient number, since it is larger than the sum of its proper divisors (176779189343).

794008221865 is a wasteful number, since it uses less digits than its factorization.

794008221865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2996257499.

The product of its (nonzero) digits is 1935360, while the sum is 52.

The spelling of 794008221865 in words is "seven hundred ninety-four billion, eight million, two hundred twenty-one thousand, eight hundred sixty-five".