20163492871 has 2 divisors, whose sum is σ = 20163492872. Its totient is φ = 20163492870.

The previous prime is 20163492859. The next prime is 20163492893. The reversal of 20163492871 is 17829436102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20163492871 - 2⁷ = 20163492743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20163492841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10081746435 + 10081746436.

It is an arithmetic number, because the mean of its divisors is an integer number (10081746436).

Almost surely, 2^20163492871 is an apocalyptic number.

20163492871 is a deficient number, since it is larger than the sum of its proper divisors (1).

20163492871 is an equidigital number, since it uses as much as digits as its factorization.

20163492871 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 43.

The spelling of 20163492871 in words is "twenty billion, one hundred sixty-three million, four hundred ninety-two thousand, eight hundred seventy-one".