163453510609 has 2 divisors, whose sum is σ = 163453510610. Its totient is φ = 163453510608.

The previous prime is 163453510601. The next prime is 163453510663. The reversal of 163453510609 is 906015354361.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 102566467600 + 60887043009 = 320260^2 + 246753^2 .

It is a cyclic number.

It is not a de Polignac number, because 163453510609 - 2³ = 163453510601 is a prime.

It is not a weakly prime, because it can be changed into another prime (163453510601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81726755304 + 81726755305.

It is an arithmetic number, because the mean of its divisors is an integer number (81726755305).

Almost surely, 2^163453510609 is an apocalyptic number.

It is an amenable number.

163453510609 is a deficient number, since it is larger than the sum of its proper divisors (1).

163453510609 is an equidigital number, since it uses as much as digits as its factorization.

163453510609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 291600, while the sum is 43.

The spelling of 163453510609 in words is "one hundred sixty-three billion, four hundred fifty-three million, five hundred ten thousand, six hundred nine".