163431145061 has 2 divisors, whose sum is σ = 163431145062. Its totient is φ = 163431145060.

The previous prime is 163431145021. The next prime is 163431145079. The reversal of 163431145061 is 160541134361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 117851457025 + 45579688036 = 343295^2 + 213494^2 .

It is a cyclic number.

It is not a de Polignac number, because 163431145061 - 2¹⁸ = 163430882917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163431145021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81715572530 + 81715572531.

It is an arithmetic number, because the mean of its divisors is an integer number (81715572531).

Almost surely, 2^163431145061 is an apocalyptic number.

It is an amenable number.

163431145061 is a deficient number, since it is larger than the sum of its proper divisors (1).

163431145061 is an equidigital number, since it uses as much as digits as its factorization.

163431145061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 35.

The spelling of 163431145061 in words is "one hundred sixty-three billion, four hundred thirty-one million, one hundred forty-five thousand, sixty-one".