20622045641 has 2 divisors, whose sum is σ = 20622045642. Its totient is φ = 20622045640.

The previous prime is 20622045607. The next prime is 20622045677. The reversal of 20622045641 is 14654022602.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20253559225 + 368486416 = 142315^2 + 19196^2 .

It is a cyclic number.

It is not a de Polignac number, because 20622045641 - 2¹⁰ = 20622044617 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20622045598 and 20622045607.

It is not a weakly prime, because it can be changed into another prime (20622045541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10311022820 + 10311022821.

It is an arithmetic number, because the mean of its divisors is an integer number (10311022821).

Almost surely, 2^20622045641 is an apocalyptic number.

It is an amenable number.

20622045641 is a deficient number, since it is larger than the sum of its proper divisors (1).

20622045641 is an equidigital number, since it uses as much as digits as its factorization.

20622045641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23040, while the sum is 32.

The spelling of 20622045641 in words is "twenty billion, six hundred twenty-two million, forty-five thousand, six hundred forty-one".