20663462144443 has 2 divisors, whose sum is σ = 20663462144444. Its totient is φ = 20663462144442.

The previous prime is 20663462144441. The next prime is 20663462144447. The reversal of 20663462144443 is 34444126436602.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20663462144443 - 2¹ = 20663462144441 is a prime.

Together with 20663462144441, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (20663462144441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10331731072221 + 10331731072222.

It is an arithmetic number, because the mean of its divisors is an integer number (10331731072222).

Almost surely, 2^{20663462144443} is an apocalyptic number.

20663462144443 is a deficient number, since it is larger than the sum of its proper divisors (1).

20663462144443 is an equidigital number, since it uses as much as digits as its factorization.

20663462144443 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7962624, while the sum is 49.

The spelling of 20663462144443 in words is "twenty trillion, six hundred sixty-three billion, four hundred sixty-two million, one hundred forty-four thousand, four hundred forty-three".