378552229977329 has 2 divisors, whose sum is σ = 378552229977330. Its totient is φ = 378552229977328.

The previous prime is 378552229977223. The next prime is 378552229977331. The reversal of 378552229977329 is 923779922255873.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 378169473696400 + 382756280929 = 19446580^2 + 618673^2 .

It is a cyclic number.

It is not a de Polignac number, because 378552229977329 - 2⁴⁴ = 360960043932913 is a prime.

Together with 378552229977331, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (378552229977379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189276114988664 + 189276114988665.

It is an arithmetic number, because the mean of its divisors is an integer number (189276114988665).

Almost surely, 2^{378552229977329} is an apocalyptic number.

It is an amenable number.

378552229977329 is a deficient number, since it is larger than the sum of its proper divisors (1).

378552229977329 is an equidigital number, since it uses as much as digits as its factorization.

378552229977329 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7201353600, while the sum is 80.

The spelling of 378552229977329 in words is "three hundred seventy-eight trillion, five hundred fifty-two billion, two hundred twenty-nine million, nine hundred seventy-seven thousand, three hundred twenty-nine".