20470896289409 has 2 divisors, whose sum is σ = 20470896289410. Its totient is φ = 20470896289408.

The previous prime is 20470896289351. The next prime is 20470896289433. The reversal of 20470896289409 is 90498269807402.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14683672197184 + 5787224092225 = 3831928^2 + 2405665^2 .

It is a cyclic number.

It is not a de Polignac number, because 20470896289409 - 2⁸ = 20470896289153 is a prime.

It is not a weakly prime, because it can be changed into another prime (20470893289409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10235448144704 + 10235448144705.

It is an arithmetic number, because the mean of its divisors is an integer number (10235448144705).

Almost surely, 2^{20470896289409} is an apocalyptic number.

It is an amenable number.

20470896289409 is a deficient number, since it is larger than the sum of its proper divisors (1).

20470896289409 is an equidigital number, since it uses as much as digits as its factorization.

20470896289409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 125411328, while the sum is 68.

The spelling of 20470896289409 in words is "twenty trillion, four hundred seventy billion, eight hundred ninety-six million, two hundred eighty-nine thousand, four hundred nine".