163464564303661 has 2 divisors, whose sum is σ = 163464564303662. Its totient is φ = 163464564303660.

The previous prime is 163464564303631. The next prime is 163464564303673. The reversal of 163464564303661 is 166303465464361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 151456218630025 + 12008345673636 = 12306755^2 + 3465306^2 .

It is a cyclic number.

It is not a de Polignac number, because 163464564303661 - 2¹¹ = 163464564301613 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 163464564303596 and 163464564303605.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163464564303631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81732282151830 + 81732282151831.

It is an arithmetic number, because the mean of its divisors is an integer number (81732282151831).

Almost surely, 2^{163464564303661} is an apocalyptic number.

It is an amenable number.

163464564303661 is a deficient number, since it is larger than the sum of its proper divisors (1).

163464564303661 is an equidigital number, since it uses as much as digits as its factorization.

163464564303661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 67184640, while the sum is 58.

The spelling of 163464564303661 in words is "one hundred sixty-three trillion, four hundred sixty-four billion, five hundred sixty-four million, three hundred three thousand, six hundred sixty-one".