321130560050550 has 288 divisors, whose sum is σ = 954379479062880. Its totient is φ = 77047767552000.

The previous prime is 321130560050549. The next prime is 321130560050561. The reversal of 321130560050550 is 55050065031123.

321130560050550 is a `hidden beast` number, since 3 + 2 + 1 + 1 + 3 + 0 + 56 + 0 + 0 + 50 + 550 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 15240949 + ... + 29572751.

It is an arithmetic number, because the mean of its divisors is an integer number (3313817635635).

Almost surely, 2^{321130560050550} is an apocalyptic number.

321130560050550 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 321130560050550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (477189739531440).

321130560050550 is an abundant number, since it is smaller than the sum of its proper divisors (633248919012330).

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

321130560050550 is a wasteful number, since it uses less digits than its factorization.

321130560050550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14331968 (or 14331960 counting only the distinct ones).

The product of its (nonzero) digits is 67500, while the sum is 36.

The spelling of 321130560050550 in words is "three hundred twenty-one trillion, one hundred thirty billion, five hundred sixty million, fifty thousand, five hundred fifty".