84194374361 has 2 divisors, whose sum is σ = 84194374362. Its totient is φ = 84194374360.

The previous prime is 84194374337. The next prime is 84194374387. The reversal of 84194374361 is 16347349148.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62777808025 + 21416566336 = 250555^2 + 146344^2 .

It is a cyclic number.

It is not a de Polignac number, because 84194374361 - 2¹⁴ = 84194357977 is a prime.

It is not a weakly prime, because it can be changed into another prime (84194374331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42097187180 + 42097187181.

It is an arithmetic number, because the mean of its divisors is an integer number (42097187181).

Almost surely, 2^84194374361 is an apocalyptic number.

It is an amenable number.

84194374361 is a deficient number, since it is larger than the sum of its proper divisors (1).

84194374361 is an equidigital number, since it uses as much as digits as its factorization.

84194374361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1741824, while the sum is 50.

The spelling of 84194374361 in words is "eighty-four billion, one hundred ninety-four million, three hundred seventy-four thousand, three hundred sixty-one".