321645516241 has 12 divisors (see below), whose sum is σ = 374605076160. Its totient is φ = 275367520680.

The previous prime is 321645516223. The next prime is 321645516253. The reversal of 321645516241 is 142615546123.

It is not a de Polignac number, because 321645516241 - 2¹³ = 321645508049 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 321645516194 and 321645516203.

It is not an unprimeable number, because it can be changed into a prime (321645556241) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3870805 + ... + 3953026.

It is an arithmetic number, because the mean of its divisors is an integer number (31217089680).

Almost surely, 2^321645516241 is an apocalyptic number.

It is an amenable number.

321645516241 is a deficient number, since it is larger than the sum of its proper divisors (52959559919).

321645516241 is an equidigital number, since it uses as much as digits as its factorization.

321645516241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7824684 (or 7824677 counting only the distinct ones).

The product of its digits is 172800, while the sum is 40.

The spelling of 321645516241 in words is "three hundred twenty-one billion, six hundred forty-five million, five hundred sixteen thousand, two hundred forty-one".