20555043463 has 2 divisors, whose sum is σ = 20555043464. Its totient is φ = 20555043462.

The previous prime is 20555043437. The next prime is 20555043521. The reversal of 20555043463 is 36434055502.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20555043463 - 2²¹ = 20552946311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20555043433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10277521731 + 10277521732.

It is an arithmetic number, because the mean of its divisors is an integer number (10277521732).

Almost surely, 2^20555043463 is an apocalyptic number.

20555043463 is a deficient number, since it is larger than the sum of its proper divisors (1).

20555043463 is an equidigital number, since it uses as much as digits as its factorization.

20555043463 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216000, while the sum is 37.

Adding to 20555043463 its reverse (36434055502), we get a palindrome (56989098965).

The spelling of 20555043463 in words is "twenty billion, five hundred fifty-five million, forty-three thousand, four hundred sixty-three".