20420044067 has 2 divisors, whose sum is σ = 20420044068. Its totient is φ = 20420044066.

The previous prime is 20420044009. The next prime is 20420044091. The reversal of 20420044067 is 76044002402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20420044067 - 2³² = 16125076771 is a prime.

It is not a weakly prime, because it can be changed into another prime (20420044867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10210022033 + 10210022034.

It is an arithmetic number, because the mean of its divisors is an integer number (10210022034).

Almost surely, 2^20420044067 is an apocalyptic number.

20420044067 is a deficient number, since it is larger than the sum of its proper divisors (1).

20420044067 is an equidigital number, since it uses as much as digits as its factorization.

20420044067 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10752, while the sum is 29.

Adding to 20420044067 its reverse (76044002402), we get a palindrome (96464046469).

The spelling of 20420044067 in words is "twenty billion, four hundred twenty million, forty-four thousand, sixty-seven".