20350006253449 has 2 divisors, whose sum is σ = 20350006253450. Its totient is φ = 20350006253448.

The previous prime is 20350006253389. The next prime is 20350006253459. The reversal of 20350006253449 is 94435260005302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20220823517049 + 129182736400 = 4496757^2 + 359420^2 .

It is a cyclic number.

It is not a de Polignac number, because 20350006253449 - 2¹⁷ = 20350006122377 is a prime.

It is not a weakly prime, because it can be changed into another prime (20350006253459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10175003126724 + 10175003126725.

It is an arithmetic number, because the mean of its divisors is an integer number (10175003126725).

Almost surely, 2^{20350006253449} is an apocalyptic number.

It is an amenable number.

20350006253449 is a deficient number, since it is larger than the sum of its proper divisors (1).

20350006253449 is an equidigital number, since it uses as much as digits as its factorization.

20350006253449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 777600, while the sum is 43.

The spelling of 20350006253449 in words is "twenty trillion, three hundred fifty billion, six million, two hundred fifty-three thousand, four hundred forty-nine".