20303663801 has 2 divisors, whose sum is σ = 20303663802. Its totient is φ = 20303663800.

The previous prime is 20303663789. The next prime is 20303663843. The reversal of 20303663801 is 10836630302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11742973225 + 8560690576 = 108365^2 + 92524^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20303663801 is a prime.

It is not a weakly prime, because it can be changed into another prime (20303669801) 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, 10151831900 + 10151831901.

It is an arithmetic number, because the mean of its divisors is an integer number (10151831901).

Almost surely, 2^20303663801 is an apocalyptic number.

It is an amenable number.

20303663801 is a deficient number, since it is larger than the sum of its proper divisors (1).

20303663801 is an equidigital number, since it uses as much as digits as its factorization.

20303663801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 32.

The spelling of 20303663801 in words is "twenty billion, three hundred three million, six hundred sixty-three thousand, eight hundred one".