20105326301651 has 2 divisors, whose sum is σ = 20105326301652. Its totient is φ = 20105326301650.

The previous prime is 20105326301647. The next prime is 20105326301701. The reversal of 20105326301651 is 15610362350102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20105326301651 - 2² = 20105326301647 is a prime.

It is not a weakly prime, because it can be changed into another prime (20105326321651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10052663150825 + 10052663150826.

It is an arithmetic number, because the mean of its divisors is an integer number (10052663150826).

Almost surely, 2^{20105326301651} is an apocalyptic number.

20105326301651 is a deficient number, since it is larger than the sum of its proper divisors (1).

20105326301651 is an equidigital number, since it uses as much as digits as its factorization.

20105326301651 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32400, while the sum is 35.

Adding to 20105326301651 its reverse (15610362350102), we get a palindrome (35715688651753).

The spelling of 20105326301651 in words is "twenty trillion, one hundred five billion, three hundred twenty-six million, three hundred one thousand, six hundred fifty-one".