84868582549 has 2 divisors, whose sum is σ = 84868582550. Its totient is φ = 84868582548.

The previous prime is 84868582523. The next prime is 84868582559. The reversal of 84868582549 is 94528586848.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84104060049 + 764522500 = 290007^2 + 27650^2 .

It is a cyclic number.

It is not a de Polignac number, because 84868582549 - 2¹¹ = 84868580501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84868582559) 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, 42434291274 + 42434291275.

It is an arithmetic number, because the mean of its divisors is an integer number (42434291275).

Almost surely, 2^84868582549 is an apocalyptic number.

It is an amenable number.

84868582549 is a deficient number, since it is larger than the sum of its proper divisors (1).

84868582549 is an equidigital number, since it uses as much as digits as its factorization.

84868582549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 176947200, while the sum is 67.

The spelling of 84868582549 in words is "eighty-four billion, eight hundred sixty-eight million, five hundred eighty-two thousand, five hundred forty-nine".