325617821616 has 40 divisors (see below), whose sum is σ = 877752391680. Its totient is φ = 103820174656.

The previous prime is 325617821513. The next prime is 325617821621. The reversal of 325617821616 is 616128716523.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147470736 + ... + 147472943.

It is an arithmetic number, because the mean of its divisors is an integer number (21943809792).

Almost surely, 2^325617821616 is an apocalyptic number.

It is an amenable number.

325617821616 is an abundant number, since it is smaller than the sum of its proper divisors (552134570064).

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

325617821616 is a wasteful number, since it uses less digits than its factorization.

325617821616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294943713 (or 294943707 counting only the distinct ones).

The product of its digits is 725760, while the sum is 48.

The spelling of 325617821616 in words is "three hundred twenty-five billion, six hundred seventeen million, eight hundred twenty-one thousand, six hundred sixteen".