6422985678321 has 27 divisors (see below), whose sum is σ = 9310831454379. Its totient is φ = 4266728530272.

The previous prime is 6422985678293. The next prime is 6422985678383. The reversal of 6422985678321 is 1238765892246.

The square root of 6422985678321 is 2534361.

It is a perfect power (a square), and thus also a powerful number.

6422985678321 is a `hidden beast` number, since 6 + 4 + 229 + 85 + 6 + 7 + 8 + 321 = 666.

It can be written as a sum of positive squares in only one way, i.e., 40975880625 + 6382009797696 = 202425^2 + 2526264^2 .

It is not a de Polignac number, because 6422985678321 - 2⁹ = 6422985677809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6422985678821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 2379763630 + ... + 2379766328.

Almost surely, 2^{6422985678321} is an apocalyptic number.

6422985678321 is the 2534361-st square number.

6422985678321 is the 1267181-st centered octagonal number.

It is an amenable number.

6422985678321 is a deficient number, since it is larger than the sum of its proper divisors (2887845776058).

6422985678321 is an frugal number, since it uses more digits than its factorization.

6422985678321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6030 (or 3015 counting only the distinct ones).

The product of its digits is 69672960, while the sum is 63.

The spelling of 6422985678321 in words is "six trillion, four hundred twenty-two billion, nine hundred eighty-five million, six hundred seventy-eight thousand, three hundred twenty-one".