320833972821 has 8 divisors (see below), whose sum is σ = 427786092160. Its totient is φ = 213885584352.

The previous prime is 320833972759. The next prime is 320833972831. The reversal of 320833972821 is 128279338023.

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

It is not a de Polignac number, because 320833972821 - 2⁶ = 320833972757 is a prime.

It is a super-2 number, since 2×320833972821² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320833972831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 725485 + ... + 1080738.

It is an arithmetic number, because the mean of its divisors is an integer number (53473261520).

Almost surely, 2^320833972821 is an apocalyptic number.

It is an amenable number.

320833972821 is a deficient number, since it is larger than the sum of its proper divisors (106952119339).

320833972821 is a wasteful number, since it uses less digits than its factorization.

320833972821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1865435.

The product of its (nonzero) digits is 870912, while the sum is 48.

The spelling of 320833972821 in words is "three hundred twenty billion, eight hundred thirty-three million, nine hundred seventy-two thousand, eight hundred twenty-one".