321916368533759 has 2 divisors, whose sum is σ = 321916368533760. Its totient is φ = 321916368533758.

The previous prime is 321916368533737. The next prime is 321916368533797. The reversal of 321916368533759 is 957335863619123.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 321916368533759 - 2²⁰ = 321916367485183 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 321916368533692 and 321916368533701.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321916368533059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160958184266879 + 160958184266880.

It is an arithmetic number, because the mean of its divisors is an integer number (160958184266880).

Almost surely, 2^{321916368533759} is an apocalyptic number.

321916368533759 is a deficient number, since it is larger than the sum of its proper divisors (1).

321916368533759 is an equidigital number, since it uses as much as digits as its factorization.

321916368533759 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 661348800, while the sum is 71.

The spelling of 321916368533759 in words is "three hundred twenty-one trillion, nine hundred sixteen billion, three hundred sixty-eight million, five hundred thirty-three thousand, seven hundred fifty-nine".