163664433065047 has 2 divisors, whose sum is σ = 163664433065048. Its totient is φ = 163664433065046.

The previous prime is 163664433065011. The next prime is 163664433065101. The reversal of 163664433065047 is 740560334466361.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 163664433065047 - 2¹⁹ = 163664432540759 is a prime.

It is a super-2 number, since 2×163664433065047² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 163664433064982 and 163664433065000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163664433068047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81832216532523 + 81832216532524.

It is an arithmetic number, because the mean of its divisors is an integer number (81832216532524).

Almost surely, 2^{163664433065047} is an apocalyptic number.

163664433065047 is a deficient number, since it is larger than the sum of its proper divisors (1).

163664433065047 is an equidigital number, since it uses as much as digits as its factorization.

163664433065047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 78382080, while the sum is 58.

The spelling of 163664433065047 in words is "one hundred sixty-three trillion, six hundred sixty-four billion, four hundred thirty-three million, sixty-five thousand, forty-seven".