322639604381 has 2 divisors, whose sum is σ = 322639604382. Its totient is φ = 322639604380.

The previous prime is 322639604341. The next prime is 322639604383. The reversal of 322639604381 is 183406936223.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 256348803481 + 66290800900 = 506309^2 + 257470^2 .

It is a cyclic number.

It is not a de Polignac number, because 322639604381 - 2³⁴ = 305459735197 is a prime.

It is a super-2 number, since 2×322639604381² (a number of 24 digits) contains 22 as substring.

Together with 322639604383, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (322639604383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161319802190 + 161319802191.

It is an arithmetic number, because the mean of its divisors is an integer number (161319802191).

Almost surely, 2^322639604381 is an apocalyptic number.

It is an amenable number.

322639604381 is a deficient number, since it is larger than the sum of its proper divisors (1).

322639604381 is an equidigital number, since it uses as much as digits as its factorization.

322639604381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1119744, while the sum is 47.

The spelling of 322639604381 in words is "three hundred twenty-two billion, six hundred thirty-nine million, six hundred four thousand, three hundred eighty-one".