20416594361 has 2 divisors, whose sum is σ = 20416594362. Its totient is φ = 20416594360.

The previous prime is 20416594313. The next prime is 20416594379. The reversal of 20416594361 is 16349561402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20322213136 + 94381225 = 142556^2 + 9715^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20416594361 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (20416593361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10208297180 + 10208297181.

It is an arithmetic number, because the mean of its divisors is an integer number (10208297181).

Almost surely, 2^20416594361 is an apocalyptic number.

It is an amenable number.

20416594361 is a deficient number, since it is larger than the sum of its proper divisors (1).

20416594361 is an equidigital number, since it uses as much as digits as its factorization.

20416594361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 155520, while the sum is 41.

The spelling of 20416594361 in words is "twenty billion, four hundred sixteen million, five hundred ninety-four thousand, three hundred sixty-one".