378376211311321 has 2 divisors, whose sum is σ = 378376211311322. Its totient is φ = 378376211311320.

The previous prime is 378376211311117. The next prime is 378376211311327. The reversal of 378376211311321 is 123113112673873.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 328625689217296 + 49750522094025 = 18128036^2 + 7053405^2 .

It is a cyclic number.

It is not a de Polignac number, because 378376211311321 - 2²⁹ = 378375674440409 is a prime.

It is not a weakly prime, because it can be changed into another prime (378376211311327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189188105655660 + 189188105655661.

It is an arithmetic number, because the mean of its divisors is an integer number (189188105655661).

Almost surely, 2^{378376211311321} is an apocalyptic number.

It is an amenable number.

378376211311321 is a deficient number, since it is larger than the sum of its proper divisors (1).

378376211311321 is an equidigital number, since it uses as much as digits as its factorization.

378376211311321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 762048, while the sum is 49.

The spelling of 378376211311321 in words is "three hundred seventy-eight trillion, three hundred seventy-six billion, two hundred eleven million, three hundred eleven thousand, three hundred twenty-one".