378187321133 has 2 divisors, whose sum is σ = 378187321134. Its totient is φ = 378187321132.

The previous prime is 378187321129. The next prime is 378187321201. The reversal of 378187321133 is 331123781873.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 369582532489 + 8604788644 = 607933^2 + 92762^2 .

It is a cyclic number.

It is not a de Polignac number, because 378187321133 - 2² = 378187321129 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (378187321933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189093660566 + 189093660567.

It is an arithmetic number, because the mean of its divisors is an integer number (189093660567).

Almost surely, 2^378187321133 is an apocalyptic number.

It is an amenable number.

378187321133 is a deficient number, since it is larger than the sum of its proper divisors (1).

378187321133 is an equidigital number, since it uses as much as digits as its factorization.

378187321133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 508032, while the sum is 47.

The spelling of 378187321133 in words is "three hundred seventy-eight billion, one hundred eighty-seven million, three hundred twenty-one thousand, one hundred thirty-three".