20442299971 has 2 divisors, whose sum is σ = 20442299972. Its totient is φ = 20442299970.

The previous prime is 20442299959. The next prime is 20442300007. The reversal of 20442299971 is 17999224402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20442299971 - 2²⁷ = 20308082243 is a prime.

It is not a weakly prime, because it can be changed into another prime (20442299771) 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, 10221149985 + 10221149986.

It is an arithmetic number, because the mean of its divisors is an integer number (10221149986).

Almost surely, 2^20442299971 is an apocalyptic number.

20442299971 is a deficient number, since it is larger than the sum of its proper divisors (1).

20442299971 is an equidigital number, since it uses as much as digits as its factorization.

20442299971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 653184, while the sum is 49.

The spelling of 20442299971 in words is "twenty billion, four hundred forty-two million, two hundred ninety-nine thousand, nine hundred seventy-one".