20648330161439 has 2 divisors, whose sum is σ = 20648330161440. Its totient is φ = 20648330161438.

The previous prime is 20648330161337. The next prime is 20648330161447. The reversal of 20648330161439 is 93416103384602.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20648330161439 - 2⁸ = 20648330161183 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20648300161439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10324165080719 + 10324165080720.

It is an arithmetic number, because the mean of its divisors is an integer number (10324165080720).

Almost surely, 2^{20648330161439} is an apocalyptic number.

20648330161439 is a deficient number, since it is larger than the sum of its proper divisors (1).

20648330161439 is an equidigital number, since it uses as much as digits as its factorization.

20648330161439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2239488, while the sum is 50.

The spelling of 20648330161439 in words is "twenty trillion, six hundred forty-eight billion, three hundred thirty million, one hundred sixty-one thousand, four hundred thirty-nine".