396381807361 has 2 divisors, whose sum is σ = 396381807362. Its totient is φ = 396381807360.

The previous prime is 396381807293. The next prime is 396381807373. The reversal of 396381807361 is 163708183693.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 327549037761 + 68832769600 = 572319^2 + 262360^2 .

It is a cyclic number.

It is not a de Polignac number, because 396381807361 - 2⁷ = 396381807233 is a prime.

It is not a weakly prime, because it can be changed into another prime (396381807061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198190903680 + 198190903681.

It is an arithmetic number, because the mean of its divisors is an integer number (198190903681).

Almost surely, 2^396381807361 is an apocalyptic number.

It is an amenable number.

396381807361 is a deficient number, since it is larger than the sum of its proper divisors (1).

396381807361 is an equidigital number, since it uses as much as digits as its factorization.

396381807361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3919104, while the sum is 55.

The spelling of 396381807361 in words is "three hundred ninety-six billion, three hundred eighty-one million, eight hundred seven thousand, three hundred sixty-one".