20132228917 has 2 divisors, whose sum is σ = 20132228918. Its totient is φ = 20132228916.

The previous prime is 20132228863. The next prime is 20132228927. The reversal of 20132228917 is 71982223102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15926187601 + 4206041316 = 126199^2 + 64854^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20132228917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20132228927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10066114458 + 10066114459.

It is an arithmetic number, because the mean of its divisors is an integer number (10066114459).

Almost surely, 2^20132228917 is an apocalyptic number.

It is an amenable number.

20132228917 is a deficient number, since it is larger than the sum of its proper divisors (1).

20132228917 is an equidigital number, since it uses as much as digits as its factorization.

20132228917 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 37.

The spelling of 20132228917 in words is "twenty billion, one hundred thirty-two million, two hundred twenty-eight thousand, nine hundred seventeen".