84185019361 has 2 divisors, whose sum is σ = 84185019362. Its totient is φ = 84185019360.

The previous prime is 84185019301. The next prime is 84185019427. The reversal of 84185019361 is 16391058148.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61581400336 + 22603619025 = 248156^2 + 150345^2 .

It is a cyclic number.

It is not a de Polignac number, because 84185019361 - 2⁹ = 84185018849 is a prime.

It is not a weakly prime, because it can be changed into another prime (84185019301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42092509680 + 42092509681.

It is an arithmetic number, because the mean of its divisors is an integer number (42092509681).

Almost surely, 2^84185019361 is an apocalyptic number.

It is an amenable number.

84185019361 is a deficient number, since it is larger than the sum of its proper divisors (1).

84185019361 is an equidigital number, since it uses as much as digits as its factorization.

84185019361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 207360, while the sum is 46.

The spelling of 84185019361 in words is "eighty-four billion, one hundred eighty-five million, nineteen thousand, three hundred sixty-one".