20017506442019 has 2 divisors, whose sum is σ = 20017506442020. Its totient is φ = 20017506442018.

The previous prime is 20017506441973. The next prime is 20017506442121. The reversal of 20017506442019 is 91024460571002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20017506442019 - 2²⁰ = 20017505393443 is a prime.

It is a super-2 number, since 2×20017506442019² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20017506442519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10008753221009 + 10008753221010.

It is an arithmetic number, because the mean of its divisors is an integer number (10008753221010).

Almost surely, 2^{20017506442019} is an apocalyptic number.

20017506442019 is a deficient number, since it is larger than the sum of its proper divisors (1).

20017506442019 is an equidigital number, since it uses as much as digits as its factorization.

20017506442019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 41.

The spelling of 20017506442019 in words is "twenty trillion, seventeen billion, five hundred six million, four hundred forty-two thousand, nineteen".