20345328007 has 2 divisors, whose sum is σ = 20345328008. Its totient is φ = 20345328006.

The previous prime is 20345327917. The next prime is 20345328023. The reversal of 20345328007 is 70082354302.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20345328007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20345326007) 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, 10172664003 + 10172664004.

It is an arithmetic number, because the mean of its divisors is an integer number (10172664004).

Almost surely, 2^20345328007 is an apocalyptic number.

20345328007 is a deficient number, since it is larger than the sum of its proper divisors (1).

20345328007 is an equidigital number, since it uses as much as digits as its factorization.

20345328007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40320, while the sum is 34.

The spelling of 20345328007 in words is "twenty billion, three hundred forty-five million, three hundred twenty-eight thousand, seven".