163887310540823 has 2 divisors, whose sum is σ = 163887310540824. Its totient is φ = 163887310540822.

The previous prime is 163887310540783. The next prime is 163887310540883. The reversal of 163887310540823 is 328045013788361.

It is a weak prime.

It is an emirp because it is prime and its reverse (328045013788361) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 163887310540823 - 2¹² = 163887310536727 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163887310540883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81943655270411 + 81943655270412.

It is an arithmetic number, because the mean of its divisors is an integer number (81943655270412).

Almost surely, 2^{163887310540823} is an apocalyptic number.

163887310540823 is a deficient number, since it is larger than the sum of its proper divisors (1).

163887310540823 is an equidigital number, since it uses as much as digits as its factorization.

163887310540823 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23224320, while the sum is 59.

The spelling of 163887310540823 in words is "one hundred sixty-three trillion, eight hundred eighty-seven billion, three hundred ten million, five hundred forty thousand, eight hundred twenty-three".