321121915848 has 96 divisors (see below), whose sum is σ = 899897731200. Its totient is φ = 103326297984.

The previous prime is 321121915847. The next prime is 321121915879. The reversal of 321121915848 is 848519121123.

321121915848 is a `hidden beast` number, since 32 + 11 + 21 + 9 + 1 + 584 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (321121915847) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10899265 + ... + 10928687.

It is an arithmetic number, because the mean of its divisors is an integer number (9373934700).

Almost surely, 2^321121915848 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 321121915848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (449948865600).

321121915848 is an abundant number, since it is smaller than the sum of its proper divisors (578775815352).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

321121915848 is a wasteful number, since it uses less digits than its factorization.

321121915848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34691 (or 34684 counting only the distinct ones).

The product of its digits is 138240, while the sum is 45.

The spelling of 321121915848 in words is "three hundred twenty-one billion, one hundred twenty-one million, nine hundred fifteen thousand, eight hundred forty-eight".