321604212125651 has 8 divisors (see below), whose sum is σ = 395820568770144. Its totient is φ = 254456079923520.

The previous prime is 321604212125561. The next prime is 321604212125701. The reversal of 321604212125651 is 156521212406123.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 321604212125651 - 2¹⁸ = 321604211863507 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 321604212125599 and 321604212125608.

It is not an unprimeable number, because it can be changed into a prime (321604212125051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1767056110490 + ... + 1767056110671.

It is an arithmetic number, because the mean of its divisors is an integer number (49477571096268).

Almost surely, 2^{321604212125651} is an apocalyptic number.

321604212125651 is a deficient number, since it is larger than the sum of its proper divisors (74216356644493).

321604212125651 is a wasteful number, since it uses less digits than its factorization.

321604212125651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3534112221181.

The product of its (nonzero) digits is 172800, while the sum is 41.

The spelling of 321604212125651 in words is "three hundred twenty-one trillion, six hundred four billion, two hundred twelve million, one hundred twenty-five thousand, six hundred fifty-one".