20005424051 has 2 divisors, whose sum is σ = 20005424052. Its totient is φ = 20005424050.

The previous prime is 20005423979. The next prime is 20005424053. The reversal of 20005424051 is 15042450002.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20005424051 is a prime.

Together with 20005424053, 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 (20005424053) 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, 10002712025 + 10002712026.

It is an arithmetic number, because the mean of its divisors is an integer number (10002712026).

Almost surely, 2^20005424051 is an apocalyptic number.

20005424051 is a deficient number, since it is larger than the sum of its proper divisors (1).

20005424051 is an equidigital number, since it uses as much as digits as its factorization.

20005424051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1600, while the sum is 23.

Adding to 20005424051 its reverse (15042450002), we get a palindrome (35047874053).

The spelling of 20005424051 in words is "twenty billion, five million, four hundred twenty-four thousand, fifty-one".