84563270549 has 2 divisors, whose sum is σ = 84563270550. Its totient is φ = 84563270548.

The previous prime is 84563270537. The next prime is 84563270587. The reversal of 84563270549 is 94507236548.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70547078449 + 14016192100 = 265607^2 + 118390^2 .

It is a cyclic number.

It is not a de Polignac number, because 84563270549 - 2¹² = 84563266453 is a prime.

It is a super-2 number, since 2×84563270549² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 84563270549.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84563270849) 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, 42281635274 + 42281635275.

It is an arithmetic number, because the mean of its divisors is an integer number (42281635275).

Almost surely, 2^84563270549 is an apocalyptic number.

It is an amenable number.

84563270549 is a deficient number, since it is larger than the sum of its proper divisors (1).

84563270549 is an equidigital number, since it uses as much as digits as its factorization.

84563270549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7257600, while the sum is 53.

The spelling of 84563270549 in words is "eighty-four billion, five hundred sixty-three million, two hundred seventy thousand, five hundred forty-nine".