20413154464009 has 2 divisors, whose sum is σ = 20413154464010. Its totient is φ = 20413154464008.

The previous prime is 20413154464007. The next prime is 20413154464033. The reversal of 20413154464009 is 90046445131402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11462646236409 + 8950508227600 = 3385653^2 + 2991740^2 .

It is a cyclic number.

It is not a de Polignac number, because 20413154464009 - 2¹ = 20413154464007 is a prime.

Together with 20413154464007, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (20413154464007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10206577232004 + 10206577232005.

It is an arithmetic number, because the mean of its divisors is an integer number (10206577232005).

Almost surely, 2^{20413154464009} is an apocalyptic number.

It is an amenable number.

20413154464009 is a deficient number, since it is larger than the sum of its proper divisors (1).

20413154464009 is an equidigital number, since it uses as much as digits as its factorization.

20413154464009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 414720, while the sum is 43.

The spelling of 20413154464009 in words is "twenty trillion, four hundred thirteen billion, one hundred fifty-four million, four hundred sixty-four thousand, nine".