163440162443563 has 2 divisors, whose sum is σ = 163440162443564. Its totient is φ = 163440162443562.

The previous prime is 163440162443501. The next prime is 163440162443609. The reversal of 163440162443563 is 365344261044361.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-163440162443563 is a prime.

It is a super-2 number, since 2×163440162443563² (a number of 29 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 163440162443563.

It is not a weakly prime, because it can be changed into another prime (163440162440563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81720081221781 + 81720081221782.

It is an arithmetic number, because the mean of its divisors is an integer number (81720081221782).

Almost surely, 2^{163440162443563} is an apocalyptic number.

163440162443563 is a deficient number, since it is larger than the sum of its proper divisors (1).

163440162443563 is an equidigital number, since it uses as much as digits as its factorization.

163440162443563 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14929920, while the sum is 52.

The spelling of 163440162443563 in words is "one hundred sixty-three trillion, four hundred forty billion, one hundred sixty-two million, four hundred forty-three thousand, five hundred sixty-three".