20368459229 has 2 divisors, whose sum is σ = 20368459230. Its totient is φ = 20368459228.

The previous prime is 20368459159. The next prime is 20368459259. The reversal of 20368459229 is 92295486302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16269002500 + 4099456729 = 127550^2 + 64027^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20368459229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20368459259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10184229614 + 10184229615.

It is an arithmetic number, because the mean of its divisors is an integer number (10184229615).

Almost surely, 2^20368459229 is an apocalyptic number.

It is an amenable number.

20368459229 is a deficient number, since it is larger than the sum of its proper divisors (1).

20368459229 is an equidigital number, since it uses as much as digits as its factorization.

20368459229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1866240, while the sum is 50.

The spelling of 20368459229 in words is "twenty billion, three hundred sixty-eight million, four hundred fifty-nine thousand, two hundred twenty-nine".