20303663810 has 16 divisors (see below), whose sum is σ = 36638658936. Its totient is φ = 8101006848.

The previous prime is 20303663801. The next prime is 20303663843. The reversal of 20303663810 is 1836630302.

It can be written as a sum of positive squares in 4 ways, for example, as 18586141561 + 1717522249 = 136331^2 + 41443^2 .

It is a super-2 number, since 2×20303663810² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2553167 + ... + 2561106.

Almost surely, 2^20303663810 is an apocalyptic number.

20303663810 is a deficient number, since it is larger than the sum of its proper divisors (16334995126).

20303663810 is a wasteful number, since it uses less digits than its factorization.

20303663810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5114677.

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

The spelling of 20303663810 in words is "twenty billion, three hundred three million, six hundred sixty-three thousand, eight hundred ten".