20380576554463 has 2 divisors, whose sum is σ = 20380576554464. Its totient is φ = 20380576554462.

The previous prime is 20380576554449. The next prime is 20380576554487. The reversal of 20380576554463 is 36445567508302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20380576554463 - 2³³ = 20371986619871 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20380576554398 and 20380576554407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20380576554413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10190288277231 + 10190288277232.

It is an arithmetic number, because the mean of its divisors is an integer number (10190288277232).

Almost surely, 2^{20380576554463} is an apocalyptic number.

20380576554463 is a deficient number, since it is larger than the sum of its proper divisors (1).

20380576554463 is an equidigital number, since it uses as much as digits as its factorization.

20380576554463 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576000, while the sum is 58.

The spelling of 20380576554463 in words is "twenty trillion, three hundred eighty billion, five hundred seventy-six million, five hundred fifty-four thousand, four hundred sixty-three".