321566512552252 has 48 divisors (see below), whose sum is σ = 655129653792768. Its totient is φ = 136485344459520.

The previous prime is 321566512552231. The next prime is 321566512552291. The reversal of 321566512552252 is 252255215665123.

It is a self number, because there is not a number n which added to its sum of digits gives 321566512552252.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1692431598 + ... + 1692621589.

It is an arithmetic number, because the mean of its divisors is an integer number (13648534454016).

Almost surely, 2^{321566512552252} is an apocalyptic number.

It is an amenable number.

321566512552252 is an abundant number, since it is smaller than the sum of its proper divisors (333563141240516).

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

321566512552252 is a wasteful number, since it uses less digits than its factorization.

321566512552252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3385053346 (or 3385053344 counting only the distinct ones).

The product of its digits is 10800000, while the sum is 52.

The spelling of 321566512552252 in words is "three hundred twenty-one trillion, five hundred sixty-six billion, five hundred twelve million, five hundred fifty-two thousand, two hundred fifty-two".