20554120314389 has 2 divisors, whose sum is σ = 20554120314390. Its totient is φ = 20554120314388.

The previous prime is 20554120314349. The next prime is 20554120314421. The reversal of 20554120314389 is 98341302145502.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18833256472900 + 1720863841489 = 4339730^2 + 1311817^2 .

It is a cyclic number.

It is not a de Polignac number, because 20554120314389 - 2³⁶ = 20485400837653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20554120314349) 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, 10277060157194 + 10277060157195.

It is an arithmetic number, because the mean of its divisors is an integer number (10277060157195).

Almost surely, 2^{20554120314389} is an apocalyptic number.

It is an amenable number.

20554120314389 is a deficient number, since it is larger than the sum of its proper divisors (1).

20554120314389 is an equidigital number, since it uses as much as digits as its factorization.

20554120314389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1036800, while the sum is 47.

The spelling of 20554120314389 in words is "twenty trillion, five hundred fifty-four billion, one hundred twenty million, three hundred fourteen thousand, three hundred eighty-nine".