163087255549 has 2 divisors, whose sum is σ = 163087255550. Its totient is φ = 163087255548.

The previous prime is 163087255547. The next prime is 163087255567. The reversal of 163087255549 is 945552780361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 110368799524 + 52718456025 = 332218^2 + 229605^2 .

It is a cyclic number.

It is not a de Polignac number, because 163087255549 - 2¹ = 163087255547 is a prime.

Together with 163087255547, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 163087255549.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163087255547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81543627774 + 81543627775.

It is an arithmetic number, because the mean of its divisors is an integer number (81543627775).

It is a 2-persistent number, because it is pandigital, and so is 2⋅163087255549 = 326174511098, but 3⋅163087255549 = 489261766647 is not.

Almost surely, 2^163087255549 is an apocalyptic number.

It is an amenable number.

163087255549 is a deficient number, since it is larger than the sum of its proper divisors (1).

163087255549 is an equidigital number, since it uses as much as digits as its factorization.

163087255549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072000, while the sum is 55.

The spelling of 163087255549 in words is "one hundred sixty-three billion, eighty-seven million, two hundred fifty-five thousand, five hundred forty-nine".