20663462144323 has 2 divisors, whose sum is σ = 20663462144324. Its totient is φ = 20663462144322.

The previous prime is 20663462144279. The next prime is 20663462144441. The reversal of 20663462144323 is 32344126436602.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20663462144323 - 2¹⁷ = 20663462013251 is a prime.

It is a super-2 number, since 2×20663462144323² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20663462144023) 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, 10331731072161 + 10331731072162.

It is an arithmetic number, because the mean of its divisors is an integer number (10331731072162).

Almost surely, 2^{20663462144323} is an apocalyptic number.

20663462144323 is a deficient number, since it is larger than the sum of its proper divisors (1).

20663462144323 is an equidigital number, since it uses as much as digits as its factorization.

20663462144323 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2985984, while the sum is 46.

The spelling of 20663462144323 in words is "twenty trillion, six hundred sixty-three billion, four hundred sixty-two million, one hundred forty-four thousand, three hundred twenty-three".