20554120304269 has 2 divisors, whose sum is σ = 20554120304270. Its totient is φ = 20554120304268.

The previous prime is 20554120304147. The next prime is 20554120304273. The reversal of 20554120304269 is 96240302145502.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19208821887369 + 1345298416900 = 4382787^2 + 1159870^2 .

It is a cyclic number.

It is not a de Polignac number, because 20554120304269 - 2³⁷ = 20416681350797 is a prime.

It is a super-2 number, since 2×20554120304269² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20554120304279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10277060152134 + 10277060152135.

It is an arithmetic number, because the mean of its divisors is an integer number (10277060152135).

Almost surely, 2^{20554120304269} is an apocalyptic number.

It is an amenable number.

20554120304269 is a deficient number, since it is larger than the sum of its proper divisors (1).

20554120304269 is an equidigital number, since it uses as much as digits as its factorization.

20554120304269 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 518400, while the sum is 43.

The spelling of 20554120304269 in words is "twenty trillion, five hundred fifty-four billion, one hundred twenty million, three hundred four thousand, two hundred sixty-nine".