163546406563 has 2 divisors, whose sum is σ = 163546406564. Its totient is φ = 163546406562.

The previous prime is 163546406531. The next prime is 163546406593. The reversal of 163546406563 is 365604645361.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 163546406563 - 2⁵ = 163546406531 is a prime.

It is a super-3 number, since 3×163546406563³ (a number of 35 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (163546406503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81773203281 + 81773203282.

It is an arithmetic number, because the mean of its divisors is an integer number (81773203282).

Almost surely, 2^163546406563 is an apocalyptic number.

163546406563 is a deficient number, since it is larger than the sum of its proper divisors (1).

163546406563 is an equidigital number, since it uses as much as digits as its factorization.

163546406563 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4665600, while the sum is 49.

The spelling of 163546406563 in words is "one hundred sixty-three billion, five hundred forty-six million, four hundred six thousand, five hundred sixty-three".