321774958493 has 2 divisors, whose sum is σ = 321774958494. Its totient is φ = 321774958492.

The previous prime is 321774958487. The next prime is 321774958517. The reversal of 321774958493 is 394859477123.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 196654997764 + 125119960729 = 443458^2 + 353723^2 .

It is a cyclic number.

It is not a de Polignac number, because 321774958493 - 2⁸ = 321774958237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321774958423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160887479246 + 160887479247.

It is an arithmetic number, because the mean of its divisors is an integer number (160887479247).

Almost surely, 2^321774958493 is an apocalyptic number.

It is an amenable number.

321774958493 is a deficient number, since it is larger than the sum of its proper divisors (1).

321774958493 is an equidigital number, since it uses as much as digits as its factorization.

321774958493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45722880, while the sum is 62.

The spelling of 321774958493 in words is "three hundred twenty-one billion, seven hundred seventy-four million, nine hundred fifty-eight thousand, four hundred ninety-three".