163144345447 has 2 divisors, whose sum is σ = 163144345448. Its totient is φ = 163144345446.

The previous prime is 163144345433. The next prime is 163144345459. The reversal of 163144345447 is 744543441361.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 163144345447 - 2⁷ = 163144345319 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 163144345397 and 163144345406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163144342447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81572172723 + 81572172724.

It is an arithmetic number, because the mean of its divisors is an integer number (81572172724).

Almost surely, 2^163144345447 is an apocalyptic number.

163144345447 is a deficient number, since it is larger than the sum of its proper divisors (1).

163144345447 is an equidigital number, since it uses as much as digits as its factorization.

163144345447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1935360, while the sum is 46.

The spelling of 163144345447 in words is "one hundred sixty-three billion, one hundred forty-four million, three hundred forty-five thousand, four hundred forty-seven".