20308944011 has 2 divisors, whose sum is σ = 20308944012. Its totient is φ = 20308944010.

The previous prime is 20308943969. The next prime is 20308944013. The reversal of 20308944011 is 11044980302.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20308944011 - 2³⁴ = 3129074827 is a prime.

It is a Sophie Germain prime.

Together with 20308944013, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20308944013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10154472005 + 10154472006.

It is an arithmetic number, because the mean of its divisors is an integer number (10154472006).

Almost surely, 2^20308944011 is an apocalyptic number.

20308944011 is a deficient number, since it is larger than the sum of its proper divisors (1).

20308944011 is an equidigital number, since it uses as much as digits as its factorization.

20308944011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 32.

The spelling of 20308944011 in words is "twenty billion, three hundred eight million, nine hundred forty-four thousand, eleven".