325631620446 has 64 divisors (see below), whose sum is σ = 726291657216. Its totient is φ = 96497366400.

The previous prime is 325631620439. The next prime is 325631620463. The reversal of 325631620446 is 644026136523.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 325631620398 and 325631620407.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 462735 + ... + 930261.

It is an arithmetic number, because the mean of its divisors is an integer number (11348307144).

Almost surely, 2^325631620446 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 325631620446, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (363145828608).

325631620446 is an abundant number, since it is smaller than the sum of its proper divisors (400660036770).

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

325631620446 is a wasteful number, since it uses less digits than its factorization.

325631620446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467777.

The product of its (nonzero) digits is 622080, while the sum is 42.

Adding to 325631620446 its reverse (644026136523), we get a palindrome (969657756969).

The spelling of 325631620446 in words is "three hundred twenty-five billion, six hundred thirty-one million, six hundred twenty thousand, four hundred forty-six".