821484720328 has 32 divisors (see below), whose sum is σ = 1621857636000. Its totient is φ = 389002849920.

The previous prime is 821484720307. The next prime is 821484720349. The reversal of 821484720328 is 823027484128.

It is an interprime number because it is at equal distance from previous prime (821484720307) and next prime (821484720349).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 354318 + ... + 1329853.

It is an arithmetic number, because the mean of its divisors is an integer number (50683051125).

Almost surely, 2^821484720328 is an apocalyptic number.

It is an amenable number.

821484720328 is a deficient number, since it is larger than the sum of its proper divisors (800372915672).

821484720328 is a wasteful number, since it uses less digits than its factorization.

821484720328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1687405 (or 1687401 counting only the distinct ones).

The product of its (nonzero) digits is 1376256, while the sum is 49.

The spelling of 821484720328 in words is "eight hundred twenty-one billion, four hundred eighty-four million, seven hundred twenty thousand, three hundred twenty-eight".