20220646417 has 2 divisors, whose sum is σ = 20220646418. Its totient is φ = 20220646416.

The previous prime is 20220646403. The next prime is 20220646451. The reversal of 20220646417 is 71464602202.

It is an a-pointer prime, because the next prime (20220646451) can be obtained adding 20220646417 to its sum of digits (34).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10255815441 + 9964830976 = 101271^2 + 99824^2 .

It is a cyclic number.

It is not a de Polignac number, because 20220646417 - 2²³ = 20212257809 is a prime.

It is not a weakly prime, because it can be changed into another prime (20220641417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10110323208 + 10110323209.

It is an arithmetic number, because the mean of its divisors is an integer number (10110323209).

Almost surely, 2^20220646417 is an apocalyptic number.

It is an amenable number.

20220646417 is a deficient number, since it is larger than the sum of its proper divisors (1).

20220646417 is an equidigital number, since it uses as much as digits as its factorization.

20220646417 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32256, while the sum is 34.

The spelling of 20220646417 in words is "twenty billion, two hundred twenty million, six hundred forty-six thousand, four hundred seventeen".