20630108929 has 2 divisors, whose sum is σ = 20630108930. Its totient is φ = 20630108928.

The previous prime is 20630108909. The next prime is 20630108951. The reversal of 20630108929 is 92980103602.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20577328704 + 52780225 = 143448^2 + 7265^2 .

It is a cyclic number.

It is not a de Polignac number, because 20630108929 - 2⁵ = 20630108897 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20630108891 and 20630108900.

It is not a weakly prime, because it can be changed into another prime (20630108909) 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, 10315054464 + 10315054465.

It is an arithmetic number, because the mean of its divisors is an integer number (10315054465).

Almost surely, 2^20630108929 is an apocalyptic number.

It is an amenable number.

20630108929 is a deficient number, since it is larger than the sum of its proper divisors (1).

20630108929 is an equidigital number, since it uses as much as digits as its factorization.

20630108929 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46656, while the sum is 40.

The spelling of 20630108929 in words is "twenty billion, six hundred thirty million, one hundred eight thousand, nine hundred twenty-nine".