20841000671 has 2 divisors, whose sum is σ = 20841000672. Its totient is φ = 20841000670.

The previous prime is 20841000659. The next prime is 20841000707. The reversal of 20841000671 is 17600014802.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20841000671 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20841000871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10420500335 + 10420500336.

It is an arithmetic number, because the mean of its divisors is an integer number (10420500336).

Almost surely, 2^20841000671 is an apocalyptic number.

20841000671 is a deficient number, since it is larger than the sum of its proper divisors (1).

20841000671 is an equidigital number, since it uses as much as digits as its factorization.

20841000671 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 29.

The spelling of 20841000671 in words is "twenty billion, eight hundred forty-one million, six hundred seventy-one", and thus it is an aban number.