20554120314187 has 2 divisors, whose sum is σ = 20554120314188. Its totient is φ = 20554120314186.

The previous prime is 20554120314173. The next prime is 20554120314269. The reversal of 20554120314187 is 78141302145502.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20554120314187 is a prime.

It is not a weakly prime, because it can be changed into another prime (20554120314887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10277060157093 + 10277060157094.

It is an arithmetic number, because the mean of its divisors is an integer number (10277060157094).

Almost surely, 2^{20554120314187} is an apocalyptic number.

20554120314187 is a deficient number, since it is larger than the sum of its proper divisors (1).

20554120314187 is an equidigital number, since it uses as much as digits as its factorization.

20554120314187 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 268800, while the sum is 43.

Adding to 20554120314187 its reverse (78141302145502), we get a palindrome (98695422459689).

The spelling of 20554120314187 in words is "twenty trillion, five hundred fifty-four billion, one hundred twenty million, three hundred fourteen thousand, one hundred eighty-seven".