20018388527 has 2 divisors, whose sum is σ = 20018388528. Its totient is φ = 20018388526.

The previous prime is 20018388497. The next prime is 20018388529. The reversal of 20018388527 is 72588381002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20018388527 - 2¹⁰ = 20018387503 is a prime.

Together with 20018388529, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20018388529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10009194263 + 10009194264.

It is an arithmetic number, because the mean of its divisors is an integer number (10009194264).

Almost surely, 2^20018388527 is an apocalyptic number.

20018388527 is a deficient number, since it is larger than the sum of its proper divisors (1).

20018388527 is an equidigital number, since it uses as much as digits as its factorization.

20018388527 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 215040, while the sum is 44.

The spelling of 20018388527 in words is "twenty billion, eighteen million, three hundred eighty-eight thousand, five hundred twenty-seven".