20323650461 has 2 divisors, whose sum is σ = 20323650462. Its totient is φ = 20323650460.

The previous prime is 20323650443. The next prime is 20323650509. The reversal of 20323650461 is 16405632302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16694190436 + 3629460025 = 129206^2 + 60245^2 .

It is a cyclic number.

It is not a de Polignac number, because 20323650461 - 2¹⁴ = 20323634077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20323650761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10161825230 + 10161825231.

It is an arithmetic number, because the mean of its divisors is an integer number (10161825231).

Almost surely, 2^20323650461 is an apocalyptic number.

It is an amenable number.

20323650461 is a deficient number, since it is larger than the sum of its proper divisors (1).

20323650461 is an equidigital number, since it uses as much as digits as its factorization.

20323650461 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 32.

The spelling of 20323650461 in words is "twenty billion, three hundred twenty-three million, six hundred fifty thousand, four hundred sixty-one".