84004663541 has 2 divisors, whose sum is σ = 84004663542. Its totient is φ = 84004663540.

The previous prime is 84004663537. The next prime is 84004663579. The reversal of 84004663541 is 14536640048.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55058745316 + 28945918225 = 234646^2 + 170135^2 .

It is a cyclic number.

It is not a de Polignac number, because 84004663541 - 2² = 84004663537 is a prime.

It is a super-2 number, since 2×84004663541² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84004663531) 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, 42002331770 + 42002331771.

It is an arithmetic number, because the mean of its divisors is an integer number (42002331771).

Almost surely, 2^84004663541 is an apocalyptic number.

It is an amenable number.

84004663541 is a deficient number, since it is larger than the sum of its proper divisors (1).

84004663541 is an equidigital number, since it uses as much as digits as its factorization.

84004663541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 276480, while the sum is 41.

The spelling of 84004663541 in words is "eighty-four billion, four million, six hundred sixty-three thousand, five hundred forty-one".