20466449713 has 2 divisors, whose sum is σ = 20466449714. Its totient is φ = 20466449712.

The previous prime is 20466449699. The next prime is 20466449777. The reversal of 20466449713 is 31794466402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12461926689 + 8004523024 = 111633^2 + 89468^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20466449713 is a prime.

It is not a weakly prime, because it can be changed into another prime (20466440713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10233224856 + 10233224857.

It is an arithmetic number, because the mean of its divisors is an integer number (10233224857).

Almost surely, 2^20466449713 is an apocalyptic number.

It is an amenable number.

20466449713 is a deficient number, since it is larger than the sum of its proper divisors (1).

20466449713 is an equidigital number, since it uses as much as digits as its factorization.

20466449713 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 870912, while the sum is 46.

The spelling of 20466449713 in words is "twenty billion, four hundred sixty-six million, four hundred forty-nine thousand, seven hundred thirteen".