123234643166563 has 2 divisors, whose sum is σ = 123234643166564. Its totient is φ = 123234643166562.

The previous prime is 123234643166543. The next prime is 123234643166633. The reversal of 123234643166563 is 365661346432321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123234643166563 - 2¹³ = 123234643158371 is a prime.

It is a super-2 number, since 2×123234643166563² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (123234643166513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61617321583281 + 61617321583282.

It is an arithmetic number, because the mean of its divisors is an integer number (61617321583282).

Almost surely, 2^{123234643166563} is an apocalyptic number.

123234643166563 is a deficient number, since it is larger than the sum of its proper divisors (1).

123234643166563 is an equidigital number, since it uses as much as digits as its factorization.

123234643166563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 33592320, while the sum is 55.

Adding to 123234643166563 its reverse (365661346432321), we get a palindrome (488895989598884).

The spelling of 123234643166563 in words is "one hundred twenty-three trillion, two hundred thirty-four billion, six hundred forty-three million, one hundred sixty-six thousand, five hundred sixty-three".