20302284917 has 2 divisors, whose sum is σ = 20302284918. Its totient is φ = 20302284916.

The previous prime is 20302284889. The next prime is 20302284941. The reversal of 20302284917 is 71948220302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19290154321 + 1012130596 = 138889^2 + 31814^2 .

It is a cyclic number.

It is not a de Polignac number, because 20302284917 - 2⁶ = 20302284853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20302280917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10151142458 + 10151142459.

It is an arithmetic number, because the mean of its divisors is an integer number (10151142459).

Almost surely, 2^20302284917 is an apocalyptic number.

It is an amenable number.

20302284917 is a deficient number, since it is larger than the sum of its proper divisors (1).

20302284917 is an equidigital number, since it uses as much as digits as its factorization.

20302284917 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 38.

The spelling of 20302284917 in words is "twenty billion, three hundred two million, two hundred eighty-four thousand, nine hundred seventeen".